CN EN

HE Zhiqun

Professional title:Professor

Office No.:010-51688675

Email:zhqhe@bjtu.edu.cn

Education

1993: PhD (Physics), J. J. Thomson Physical Lab, University of Reading, United Kingdom.

1985: MSc (Polymer Physics), The University of Science and Technology of China, Hefei, China

1982: BSc (Polymer Science), The University of Science and Technology of China, Hefei, China
Professional Experience

2003-present: Professor, Beijing Jiaotong University, China. Research in the field of organic polymer optoelectronic materials and devices, such as, film morphology and nanostructure in optoelectronic materials, molecular alignment of liquid crystals, organic luminescence, photovoltaic solar cell and organic light emitting device (OLED) physics. 

2000-2002: Senior Scientist, Freelight Systems Ltd., United Kingdom. Engaged in display and optoelectronic technology product design and development. 

1994-1999: Research Fellow, Applied Chemical and Physical Sciences, Faculty of Science, Napier University of Edinburgh, United Kingdom. Research in the field of organic polymer optoelectronic materials and devices, liquid crystal display materials and device physics, blue OLEDs, etc. 

1990-1993: Researcher (PhD postgraduate), J. J. Thomson Physical Laboratory, The University of Reading, United Kingdom. Funded by the Courtauld Polymer Science Scholarship in the United Kingdom and the British Overseas Scholars (ORS). Research in the field of polymer physics, liquid crystal molecules and their orientation. 

1988-1989: Royal Society Visiting Research Fellow, J. J. Thomson Physical Laboratory, The University of Reading, United Kingdom. Funded by the the Royal Society. Research in the field of crystalline and liquid crystal polymer condensed state. 

1985-1988: Assistant Professor, Institute of Chemistry, Chinese Academy of Science, China. Research in the field of functional polymers. 

1982-1985: Researcher (MSc postgraduate), University of Science and Technology of China, China. Research in the field of the formation and transformation of polypropylene β-crystal form. 

Research Field

Organic and polymer photovoltaic and light emitting devices

Discotic liquid crystals, molecular orientation for organic electronics

Polymer physics (morphology, processing) for optoelectronics

Hybrid materials and devices

Display technology

Teaching Courses

Courses taught as follows:

Undergraduate: Optical Information Storages and Display Technologies (Chinese/English bilinguals)

Undergraduate: Optical Information Display Technologies (Chinese/English bilinguals) [available on MOOC China : www.icourse163.org/course/NJTU-1450775197 ]

Postgraduate: Modern Display Technologies (Chinese/English bilinguals)

Paper


Publications

Photovoltaics or Solar Cells  ( organic polymer, organic-inorganic perovskite, a-Si/polymer hybrid ) :

1.   Hongkang Gong, Qi Song, Chao Ji, Huimin Zhang, Chunjun Liang, Fulin Sun, Chenhui Zhang, Anqi Yang, Dan Li, Xiping Jing, Fangtian You and Zhiqun He, “Molecular interactions and functionalities of an organic additive in a perovskite semiconducting device: a case study towards high performance solar cells”, J. Mater. Chem. A., 10 : 2876–2887 (2022). [ Journal Cover ]

2.   Han Li, Hongkang Gong, Mengjie Sun, Huimin Zhang, Chao Ji, Chunjun Liang, Fangtian You, Xiping Jing, Xiangfei Kong, and Zhiqun He*, “Tuning Molecular Interaction in Polymer Solar Cells via a Multifunctional Discotic Component to Enhance Photovoltaic Response”, Sol. RRL, 6 : 2200101 (2022). [ Journal Cover ]

3.   Huimin Zhang, Chunjun Liang,* Fulin Sun, Yuxin Cai, Qi Song, Hongkang Gong, Dan Li, Fangtian You, and Zhiqun He, “Optimization of a SnO2‑Based Electron Transport Layer Using Zirconium Acetylacetonate for Efficient and Stable Perovskite Solar Cells”, ACS Appl. Mater. Interfaces, 13 : 54579−54588 (2021).

4.   Huimin Zhang, Chunjun Liang,* Mengjie Sun, Fulin Sun, Chao Ji, Xuejian Wan, Dan Li, Fangtian You, and Zhiqun He*, “Controlled Crystallization of CsRb-Based Multi-Cation Perovskite Using a Blended Sequential Process for High-Performance Solar Cells”, Solar RRL, 5 : 2100050 (2021).

5.   Qi Song, Hongkang Gong, Chao Ji, Huimin Zhang, Fulin Sun, Fangtian You, Zhiqun He,* Dan Li,* and Chunjun Liang*, “Perovskite Passivation with a Bifunctional Molecule 1,2-Benzisothiazolin-3-One for Efficient and Stable Planar Solar Cells”, Solar RRL, 5 : 2100472 (2021).

6.   Chao Ji, Chunjun Liang,* Qi Song, Hongkang Gong, Ning Liu, Fangtian You, Dan Li, and Zhiqun He*, “Interface Engineering of 2D/3D Perovskite Heterojunction Improves Photovoltaic Efficiency and Stability”, Solar RRL, 5 : 2100072 (2021).

7.    Fulin Sun, Chunjun Liang,* Huimin Zhang, Chao Ji, Qi Song, Hongkang Gong, Dan Li, Fangtian You, and Zhiqun He*, “8-Hydroxyquinoline Metal Complexes as Cathode Interfacial Materials in Inverted Planar Perovskite Solar Cells”, Adv. Mater. Interfaces, 8 : 2100506 (2021).

8.   Mengjie Sun, Huimin Zhang, Chunjun Liang, Chao Ji, Xiping Jing, Fulin Sun, Qi Song, Fangtian You, and Zhiqun He*,  “Exploring Electron Transporting Layer in Combination with a Polyelectrolyte for n-i-p Perovskite Solar Cells” Adv. Mater. Interfaces, 7 : 2000412 (2020). [ Journal Cover ]

9.   Chao Ji, Chunjun Liang*, Huimin Zhang, Mengjie Sun, Qi Song, Fulin Sun, Xiaona Feng, Ning Liu, Hongkang Gong, Dan Li*, Fangtian You, and Zhiqun He*, “Secondary Grain Growth in Organic−Inorganic Perovskite Films with Ethylamine Hydrochloride Additives for Highly Efficient Solar Cells”, ACS Appl. Mater. Interfaces, 12 : 20026−20034 (2020).

10.  Qi Song, Chunjun Liang, Huimin Zhang, Chao Ji, Mengjie Sun, Fulin Sun, Xiping Jing, Fangtian You, Yanwu Lu, and Zhiqun He*, "Additional Organic-Solvent-Rinsing Process to Enhance Perovskite Photovoltaic Performance." Adv. Electron. Mater. , 1900244 (2019). [ Journal Cover ]

11.  Mengjie Sun, Chunjun Liang, Huimin Zhang, Chao Ji, Fulin Sun, Fangtian You, Xiping Jing, and Zhiqun He*, “Tailoring a dynamic crystalline process during the conversion of lead-halide perovskite layer to achieve high performance solar cells”, J. Mater. Chem. A, 6 : 24793–24804 (2018).

12.  Chao Ji, Chunjun Liang∗, Huimin Zhang, Mengjie Sun, Fulin Sun, Qi Song, Xuewen Zhang, Dan Li, Fangtian You, Zhiqun He∗, “C60-assisted crystal engineering for perovskite solar cells with enhanced efficiency and stability”, Org. Electron., 63 : 276–282 (2018).

13.  Zebang Guo⁠, Zhiqun He⁠⁠,* Mengjie Sun, Huimin Zhang⁠, Yajun Xu, Xiang Li⁠, Chunjun Liang⁠,* and Xiping Jing⁠, “Exploring photophysical processes in a ternary-blended polymer solar cell”, Polymer, 153 : 398–407 (2018).

14. Xuewen Zhang, Chunjun Liang,* Mengjie Sun, Huimin Zhang, Chao Ji, Zebang Guo, Yajun Xu, Fulin Sun, Qi Song and Zhiqun He*, “Improved fill factor in inverted planar perovskite solar cells with zirconium acetate as the hole-and-ion-blocking layer”, Phys. Chem. Chem. Phys., 20(11) : 7395-7400 (2018).

15. Huimin Zhang, Hong Lin, Chunjun Liang, Hong Liu, Jingjing Liang, Yong Zhao, Wenguan Zhang, Mengjie Sun, Weikang Xiao, Han Li, Stefano Polizzi, Dan Li, Fujun Zhang, Zhiqun He, and Wallace C. H. Choy, “Organic–Inorganic Perovskite Light-Emitting Electrochemical Cells with a Large Capacitance”, Adv. Funct.. Mater., 25 : 7226–7232 (2015). [ Journal Cover ]

16.  Ying Peng, Nir Yaacobi-Gross, Ajay K. Perumal, Hendrik A. Faber, George Vourlias, Panos A. Patsalas, Donal D. C. Bradley, Zhiqun He*, and Thomas D. Anthopoulos*, “Efficient organic solar cells using copper(I) iodide (CuI) hole transport layers”, Appl. Phys. Lett., 106(24) : 243302 (2015).

17.  Yong Zhao, Chunjun Liang*, Huimin Zhang, Dan Li, Ding Tian, Guobao Li, Xiping Jing, Wenguan Zhang, Weikang Xiao, Qian Liu, Fujun Zhang and Zhiqun He* “Anomalously large interface charge in polarityswitchable photovoltaic devices: an indication of mobile ions in organic–inorganic halide perovskites", Energy & Environ. Sci., 8 (4) : 1256-1260 (2015).

18.  Ying Peng, Zhiqun He, Adel Diyaf, Aruna Ivaturi, Zhi Zhang, Chunjun Liang, John I.B. Wilson, "Manipulating Hybrid Structures of Polymer/a-Si for Thin Film Solar Cells", Appl. Phys. Lett s, 104: 103903 (2014).

19.  Huimin Zhang, Chunjun Liang*, Yong Zhao, Mengjie Sun, Hong Liu, Jingjing Liang, Dan Li, Fujun Zhang and Zhiqun He*, "Dynamic interface charge governing the current–voltage hysteresis in perovskite solar cells", Phys. Chem. Chem. Phys, 17(15) : 9613 – 9618 (2015).

20. Huan Zhao, Zhiqun He*, Xiaojin Zhang, Zhi Zhang, Adel Diyaf, Anna H. N. Lind, Chunjun Liang, and John I. B. Wilson*, "A preliminary investigation on hybrid photovoltaic cells with organic phthalocyanines and amorphous silicon heterojunction", J. Phys. D: Appl. Phys. 48(19) : 195102 (2015).

21.  Zhi Zhang, Zhiqun He, Chunjun Liang, Anna H. N. Lind, Adel Diyaf, Ying Peng, John I.B. Wilson, "A preliminary development in hybrid a-silicon/polymer solar cells", Renew. Energy, 63: 145-152 (2014).

22.  Hong Liu, Chunjun Liang*, Huimin Zhang, Mengjie Sun, Jingjing Liang, Xuewen Zhang, Chao Ji, Zebang Guo, Yajun Xu, and Zhiqun He*, "Effects of surface morphology on the ionic capacitance and performance of perovskite solar cells", Jpn. J. Appl. Phys., 56 : 090305 (2017).

23.  Jingjing Liang, Chunjun Liang, Huimin Zhang, Mengjie Sun, Hong Liu, Chao Ji, Xuewen Zhang, Dan Li and Zhiqun He, "CH3NH3I post-treatment improves the performance of perovskite solar cells via eliminating the impure phases", Functional Mater. Lett., 10(4) : 1750049 (2017).

24.  Xinping Wang, Zhiqun He*, Chunjun Liang, Hai’an Qiu, and Xiping Jing, "Exploring Photocurrent Output from Donor/Acceptor Bulk-Heterojunctions by Monitoring Exciton Quenching", Chin. Phys. B, 24(6) : 063301 (2015).

25.  Zhi Zhang, Zhiqun He*, Min Xu, Chunjun Liang, "Enhancement of polymer photovoltaic performances by doping with modified carbon black nanoparticles", Appl. Phys. A, 120(2) : 601–607 (2015).

26.  Dan Li, Chunjun Liang, Huimin Zhang, Chunxiu Zhang, Fangtian You, and Zhiqun He*, “Spatially separated charge densities of electrons and holes in organic-inorganic halide perovskites”, J. Appl. Phys, 117 : 074901 (2015).

27.  Kai Sun, Zhiqun He*, and Chunjun Liang, "Effect of multiple temperature-step annealing on the performances of polymer solar cells", Acta Phys. Sin. 63(4) : 048801 (2014).

28.  Yong Zhao, Chunjun Liang*, Mengjie Sun, Qian Liu, Fujun Zhang, Dan Li, and Zhiqun He, "Effect of doping on the short-circuit current and open-circuit voltage of polymer solar cells", J. Appl. Phys, 116 : 154506 (2014).

29.  Qian Liu, Zhiqun He*, Chunjun Liang, Yong Zhao, WeiKang Xiao, Dan Li, "Effect of crystallinity of fullerene derivatives on doping density in the organic bulk heterojunction layer in polymer solar cells", Chin. Phys. Lett. 32(5) : 056801 (2015). 

30.  Teng Hou, Chunjun Liang, Fujun Zhang, Zhiqun He, Kai Sun, "Laminated Polymer Solar Cells with PEDOT:PSS Film as Anode", Chin Phys Lett, 31 : 028801 (2014).

31.  Chunjun Liang, Yongsheng Wang, Dan Li, Xingchen Ji, Fujun Zhang, Zhiqun He, "Modeling and simulation of bulk heterojunction polymer solar cells", Sol. Energy Mater. & Sol. Cells, 127 : 67–86 (2014). 

32.  Yanrong Wang, Shengang Xu, Tao Chen, Hongwu Guo, Qiongyan Liu, Baoxian Ye, Zhi Zhang, Zhiqun He and Shaokui Cao, "Synthesis and preliminary photovoltaic behavior study of a soluble polyimide containing ruthenium complexes", Polym. Chem., 1 : 1048–1055, (2010).

33.  Jianyuan Sun, Zhiqun He*, Linping Mu, Xiao Han, Junjie Wang, Bin Wang, Chunjun Liang, Yongsheng Wang, Yingliang Liu, Shaokui Cao, "Preliminary photovoltaic response from a polymer containing p-vinylenephenylene amine backbone", Sol. Energy Mater. & Sol. Cells, 91: 1289-1298 (2007).


Molecular Orientation and Charge Carrier Transporting :

1.  Huan Zhao, Zhiqun He*, Min Xu, Chunjun Liang and Sandeep Kumar, "Electron transporting organic materials with an exceptional large scale homeotropic molecular orientation", Phys. Chem. Chem. Phys., 18(12), 8554—8560 (2016)

2.  Linping Mu, Zhiqun He*, “Transport Properties of Charge Carriers in Pyrazolo-[3,4-b]-quinoline Derivative Doped Poly (N-vinylcarbazole) Film”, Acta Photon. Sin., 47(8) : 0831001 (2018).

3.    Nan Wu, Zhiqun He*, Min Xu, and Weikang Xiao, “Recent Developments of Azatriphenylene Materials as n-Type Organic Semiconductors”, Acta Phys. Chim. Sin. 30(6) : 1001-1016 (2014).

4.   Xiangfei Kong, Zhiqun He*, Yinning Zhang, Linping Mu, Chunjun Liang, Bo Chen, Xiping Jing, Andrew N Cammidge*, "A Mesogenic Triphenylene-Perylene-Triphenylene Triad", Org. Lett., 13(4) : 764-767 (2011).

5.  Junjie Wang, Zhiqun He*, Yingning Zhang, Huan Zhao, Chunxiu Zhang, Xiangfei Kong, Linping Mu, Chunjun Liang, “The driving force for homeotropic alignment of a triphenylene derivative in a hexagonal columnar mesophase on single substrates”, Thin Solid Films, 518 : 1973–1979 (2010).

6.   Juanjuan Li, Zhiqun. He*, H. Zhao, X. Kong, Hemant Gopee, M. Xu, X. An, X. Jing, Andrew N. Cammidge, “Homeotropic alignment through charge transfer induced columnar mesophase formation in an unsymmetrically substituted triphenylene derivative”, Pure Appl. Chem., 82 (11): 1993-2003 (2010).

7.  Chunxiu Zhang, Zhiqun He, Jialing Pu, Chunmei Zhang, Qiang Chen, Huan Yan, Wenguang Wang, and Yongsheng Wang “Nano-tubes and Column Formation from a Polymer/Discotic Molecule Composite Induced by Geometric Confinement”, Mol. Cryst. Liq. Cryst., 512 : 179[2025]–187[2033] (2009).

8.   Chunxiu Zhang, Zhiqun He*, Huaxiang Mao, Junjie Wang, Dongdong Wang, Yongsheng Wang, Zhongxiao Li, Jialing Pu, “Observation of disorder effects on charged carrier mobility in triphenylene based discotic materials”, J. Lumin., 2007-12, 122-123 : 931–935 (2007).

9.    Alek R. Tamvee, Zhiqun He*, et.al., “Electron drift mobility in polystyrene doped with bispyrazolopyridine derivatives”, Appl. Phys. Lett., 81: 969 - 971 (2002).

10.   Alek R. Tamvee, Zhiqun He*, et.al., “Electron drift mobility in pyrazolo[3,4b]quinoline doped polystyrene layers”, Appl. Phys. Lett., 77: 322 - 324 (2000).


Liquid Crystals, Polymer Preparation and Physical Properties :

1.   Xiangfei Kong, Ronggen Luo, Hongkang Gong, Dong Chen, Shijun Yang, Shiqing Li*, Guixia Wang* & Zhiqun He*, “Discotic liquid crystals with aggregation-induced emission properties based on tetraphenylethylene and triphenylene derivatives” Mol. Cryst. & Liq. Cryst., 724 : 26-37 (2021).

2.   Xiangfei Kong, Hongkang Gong, Peng Liu, Wei Yao, Zheng Liu, Guixia Wang,* Shufen Zhang and Zhiqun He*, “Synthesis and investigation on optoelectronic properties of mesogenic triphenylene–perylene dyads linked by ethynylphenyl bridges”, New J. Chem., 42 : 3211-3221 (2018) [ Journal Cover ]

3.   Xiangfei Kong, Liting Xia, Haifeng Zhang, Shengping Dai, Caili Yu, Zheng Liu, Linping Mu, Guixia Wang* and Zhiqun He*, "Synthesis and investigation on liquid crystal and optical properties of dyads based on triphenylene and perylene", RSC Advances, 7, 17030- 17037 (2017)

4.   Ying Peng, Zhiqun He*, Han Li, and Chunjun Liang, “Understanding the phase behavior from multiple-step isothermally crystallized poly(3-hexylthiophene)s”, Polymer, 98, 61-69 (2016)

5   Weikang Xiao, Zhiqun He*, Sonia Remiro-Buenamanana, Rebecca J. Turner, Min Xu, Xiao Yang, Xiping Jing, Andrew N. Cammidge*, “A pi-Extended Donor-Acceptor-Donor Triphenylene Twin Linked via a Pyrazine Bridge”, Org. Lett., 17(13) : 3286-3289 (2015)

6.    Juanjuan Li, Zhiqun He*, Hemant Gopee, and Andrew N Cammidge*, “Synthesis of Crown Ether-Linked Discotic Triphenylenes”, Org. Lett., 12 : 472-475 (2010).

7.  Weikang Xiao, Zhiqun He, Min Xu, Nan Wu, Xiangfei Kong, and Xiping Jing “A convenient one-step reaction leading to a key discotic intermediate: mono-hydroxytriphenylene at multi-gram scale”, Tetrahedron Lett. 56(5) : 700–705  (2015)

8.   Xiangfei Kong, Zhiqun He*, Hemant Gopee and Andrew N. Cammidge*, “Improved synthesis of monohydroxytriphenylenes (MHTs) – important precursors to discotic liquid crystal families”, Tetrahedron Lett., 52 : 77- 79 (2011)

9.   Xiangfei Kong, Zhiqun He*, Hemant Gopee and Andrew N. Cammidge*, “Synthesis and liquid crystal properties of triphenylene liquid crystals bearing polymerisable acrylate and methacrylate groups”, Liq. Cryst., 38(8), 943 - 955 (2011).

10. Xiangfei Kong, Zhiqun He*, Min Xu, Chunjun Liang, Xiping Jing, “A dione approach to modify the optical and mesophase properties of discotic triphenylene derivatives”, Funct. Mater. Lett., 4(4) : 345 - 349 (2011).

11. Chunxiu Zhang, Zhiqun He*, Junjie Wang, Yongsheng Wang, “Study of mesogenic properties and molecular conformation from a heterogeneous tetramer with a triphenylene centre core and three cyanobiphenyl tails”, J. Mol. Liq., 138 : 93–99 (2008).

12. Huaxiang Mao, Zhiqun He*, Junling Wang, Chunxiu Zhang, Ping Xie, Rongben Zhang, “A discotic triphenylene dimer as organic hole transporting material for electroluminescence devices”, J. Lumin., 2007-12, 122-123 : 942–945 (2007).

13.  Zhiqun He*, Fred J. Davis, Robert H. Olley and Geffery R. Mitchell, "Phase behaviour and non-periodic crystallisation of random aromatic copolyesters and their side chain bearing systems", Polymer, 42: 5351 – 5363 (2001).

14.  Zhiqun He, Robert H. Olley, “On spherulitic forms in an aromatic poly(ester amide)”, Polymer, 41: 1157 - 1165 (2000).

15.  Zhiqun He, Fred J. Davis, Geffery R. Mitchell, "Influence of side chain bearing units on the phase behaviour of a series of copoly(ester ether)s", Eur. Polym. J. 32(6), 735-746 (1996).

16.  Zhiqun He, and Geffery R. Mitchell,"Crystallisation of random aromatic copolyesters containing flexible spacer chains and side groups", Polymer, 35(6), 1322-1325 (1994).

17. Zhiqun He, Fred J. Davis, and Geffery R. Mitchell "Transformable proccessable rigid polyamide system containing flexible side chains for high performance material", Polymer, 35(10), 2218-2221 (1994).

18.   Zushou Xie, Zhiqun He, Daorong Dai, Rongben Zhang, “Study on the synthesis and characterization of the soluble, high molecular weight and ladderlike polymethyl-silsesquioxane”, Chin. J Polym. Sci., 7(2) :183-188 (1989)

19.  Guien. Zhou, Zhiqun He, Jianmin Yu, Zhewen Han and Guanyi Shi, “Studies on the beta-form isotactic polypropylene. 1. Characterisation of the beta-form and study of the alpha-beta transition during heating by wide angle X-ray diffraction”, Makromol. Chem. 187, 633-642 (1986)

20.  Guanyi Shi, Bin Huang, Y.H. Cao and Zhiqun He, Zhewen Han, “Studies on the beta-form isotactic polypropylene. 2. The melting behaviour of predominantly beta-form sample”, Makromol. Chem. 187, 643-652 (1986)


Organic Polymer Light Emitting Devices (OLEDs) :

1.   Kaixuan Yang, Zijin Zhao, Ming Liu, Zhengji Zhou, Kai Wang, Xiaoling Ma, Jian Wang, Zhiqun He, Fujun Zhang, “Employing liquid crystal material as regulator to enhance performance of photomultiplication type polymer photodetectors” Chem. Eng. J., 427 : 131802 (2022).

2.   Kaixuan Yang, Jian Wang, Zijin Zhao, Zhengji Zhou, Ming Liu, Jian Zhang, Zhiqun He, and Fujun Zhang, “Smart Strategy: Transparent Hole-Transporting Polymer as a Regulator to Optimize Photomultiplication-type Polymer Photodetectors”, ACS Appl. Mater. Interfaces, 13 : 21565−21572 (2021).

3.  Wenguan Zhang, Yinjie Chen, Zhiqun He, Yongsheng Wang, Shengmin Zhao, “Non-doped long-wave red electroluminescence for fumaronitrile with fluorenyl or biphenyl group”, Opt. Mater., 108 : 110425 (2020).

4. Wenguan Zhang, Zhiqun He, Yongsheng Wang, Shengmin Zhao, “Solution-processable phosphorescence based on iridium-cored small molecules with the trifluoromethyl group”, Opt. Mater., 42 : 137-143 (2015)

5. Wenguan Zhang, Chunjun Liang, Zhiqun He, Hui Pang, Yongsheng Wang, Shengmin Zhao, “Stable orange and white electrophosphorescence based on spirobifluorenyltrifluoromethyl-pyridine iridium complexes”, Synth Met., 210: 214-222 (2015).

6.  Wenguan Zhang, Zhiqun He, Hui Pang, Yongsheng Wang, Shengmin Zhao, “Spirobifluorene and biphenylaminophenyl fluorene with dimesitylboron as multifunctional electroluminescent materials”, Opt. Mater., 50: 154-161 ( 2015).

7.  Liu Yang, Zhiqun He*, Fei Dong, Shu Liu, Shujie Liu, Chunjun Liang, “Improved Performance of Hybrid White Organic Light Emitting Diodes via Adjusting Spacer Layer”, Chin J  Lumin, 36 (6) : 78-84 (2015). 

8.  Wenguan Zhang, Zhiqun He, Yongsheng Wang, Shengmin Zhao, “Non-doped red–green–blue electroluminescent devices based on fluorenyl and phenanthryl phenylamino derivatives”, Thin Solid Films, 562 : 299–306 (2014)

9.   Xiaojin Zhang, Zhiqun He, Chunjun Liang, Yongsheng Wang, Qixin Zhuang, Zhewen Ha, “Trap-induced light enhancement from a polymer light emitting device”, Appl. Phys. Lett., 103, 043306 (2013).

10. Jiang Zhao, Zhiqun He, Jiao Zhang, Xiaojin Zhang, Liu Yang, Shujie Liu, Chunjun Liang, Shu Liu, “Formation and suppression of multi-component exciplex in white organic light emitting devices”, Acta Optica Sinica, 34(8) : 082300 (2014).

11. Fan Fan, Chunjun Liang*, Zhiqun He, “Fabrication of White Polymer Light Emitting Diodes Using All Solution Method”, Chin J Lumin, 35(3) : 337-341 (2014).

12.  Yingguang Zhu, Chunjun Liang*, Shu Liu, Shujie Liu, Zhiqun He, “Effect of Interlayer on Phosphorescent White Organic Light Emitting Diodes”, Chin J Lumin, 35(7) : 824-829 (2014).

13.  Xiaojin Zhang, Zhiqun He*, Jing Wang, Linping Mu, Huan Zhao, Chunjun Liang, Qixin Zhuang, Zhewen Han, “Optimisation of poly(p-phenylene benzobisoxazole) based light-emitting devices with a complex cathode”, Chin. Phys. B., 22(11) : 117805 - 117805 (2013).

14. Wenguan Zhang, Zhiqun He, Yongsheng Wang, Hui Pang, Shengmin Zhao., “Non-doped red or blue electroluminescent materials based on fluorenyl-triarylamines with fumaronitrile or fluorene bridge”, Thin Solid Films, 520(7) : 2794 - 2799 (2012).

15.  Tengfei Meng, Zhiqun He*, Shu Liu, Shujie Liu, Chunjun Liang, Jiao Zhang, “Towards Color Stable Three band White Organic Light emitting Diodes”, Chin. J. Lumin., 33(10) : 1095 - 1100 (2012).

16. Wenguan Zhang, Zhiqun He, Yongsheng Wang, Shengmin Zhao, “Multifunctional electroluminescent material based on dimesitylboron and alpha-naphthylamino fluorene bridge”, Synth Met., 161, 2323 – 2328 (2011)

17.  Linping Mu, Zhiqun He*, Xiangfei Kong, Chunjun Liang, Yongsheng Wang, Andrzej Danel, Ewa Kulig, and G. Harry W. Milburn, “Towards color stable blue primary for displays: suppress field-dependent color change in a multilayered electroluminescent device”, J. Display Technol., 7 : 96 – 104 (2011)

18.  Linping Mu, Zhiqun He*, Xiangfei Kong, Guanbao Hui, Min Xu, Chunjun Liang, Xiping Jing, Andrzej Danel and Ewa Kulig, “Exploring a reversible quenching of fluorescence from a pyrazolo[3,4-b]quinoline derivative via protonation”, ChemPhysChem, 11 : 2623 – 2629 (2010).

19.  Wenguan Zhang, Zhiqun He*, Linping Mu, Ye Zou, Yongsheng Wang, Shengmin Zhao  “Red non-doped electroluminescent dyes based on arylamino fumaronitrile derivatives”, Dyes & Pigments, 85 : 86 – 92 (2010).

20.  Wenguan Zhang, Yongsheng Wang, Zhiqun He, Linping Mu, Ye Zou, Chunjun Liang, Shengmin Zhao, “Efficient electrophosphorescence based on 2-(9, 9-diethylfluoren-2-yl)-5-trifluoromethylpyridine iridium complexes”, Synth. Met., 160 : 354–360 (2010).

21.  Linping Mu, Zhiqun He, Jing Wang, Guanbao Hui, Yongsheng Wang, Xiping Jing, and Andrzej Danel, Ewa Kulig, “A color stable blue light emitting device using a pyrazolo[3,4-b]quinoline derivative as an emitter”, IEEE Photon. Technol. Lett., 20(21): 1781-1783 (2008)

22.  Junling Wang, Zhiqun He*, Yongsheng Wang, Linping Mu, Anmin Cao, “Photoluminescence and electroluminescence from a hybrid of lumogen red in nanoporous-silica”, J. Nanosci. & Nanotechnol., 8(3):1336-1340 (2008).

23.  Junling Wang, Zhiqun He*, Huaxiang Mao, Yufan Du, Yongsheng Wang, “Optical properties of BBOT-doped silica films prepared via sol-gel processing”, J. Lumin., 2007-12, 122-123 : 268–271 (2007).

24.  Zhiqun He*, Andrzej Danel, G. Harry W. Milburn, “Thin-layer photoluminescence and electroluminescence observed from pyrazoloquinoline-doped polymer matrices”, J. Lumin., 2007-12, 122-123 : 605–609 (2007).

25.   Andrzej Danel, Zhiqun He*, et.al., “Pyrazol-based blue electroluminescent polymers”, J. Mater. Chem. 9(2), 339-342 (1999).

26.  Zhiqun He*, G.Harry W. Milburn, et.al., “Blue electroluminescence of novel pyrazoloquinoline and bispyrazolopyridine derivatives in doped polymer matrices”, J. Mater. Chem. 7: 2323 - 2325 (1997).