Asscociate Prof. Guifang Dong Ph.D,



Address:Room 112, Hetian Building, Tsinghua University, Beijing 100084, China



1995.09-1999.11  Department of Electronic Engineering of Tsinghua University, Ph.D

1992.09-1995.07  Department of Electronic Engineering of Tsinghua University, MS

1985.09-1989.07  Department of Electronic Engineering of Xi’an Jiaotong University, BS


Work Experience

2003.01- present   Department of Chemistry, Tsinghua University, Associate Professor

2009.01-2010.02  Department of Chemical Engineering, Stanford University, USA. Visiting Scholar

1999.11-2002.12   Department of Chemistry, Tsinghua University, Lecturer


Research Interest

Organic Electronics; Organic Optoelectronic Couplers; Organic Field Effect Transistors; Interface and Nano Thin Films.


Research Projects

1. The National Natural Science Foundation of China (No. 61177023, and 50990062).

2. The National Key Basic Research and Development Program of China (Grant No. 2009CB930602).


Honors and Awards

1. In 2009, the research of Dr. Dong and their group was awarded with the Important Technology Invention in Information Industry. (certificate No. 0901075)

2. In 2008, Dr. Dong was awarded a scholarship under the State Scholarship Fund by China Scholarship Council.

3. In 2008, the project of Novel LiN electron-injection material in OLED was awarded by the Ministry of Education of PRC. (certificate No. 360-08-20020101-09)

4. In 2003, the project of Fabrication Process and Driving Circuits of Monochromator- small-molecule OLED was awarded by the Ministry of Education of PRC. (certificate No. 360-03-20020116-04)

5. In 2001, Dr. Dong was selected as one member of the “Excellent Young Teacher Group” in Tsinghua University.


Invited Talks

1. Pentacene Thin-Film Transistors with Ta2O5 as the Gate Dielectric. The 4th International TFT conference, Kyung Hee University, Seoul, Korea, Jan 24-25, 2008.

2. The optoelectronic properties of organic transistors and all-small-molecule organic optocouplers. The 4th International Conference on Photoresponsive Organics and Polymers. Zhejiang University, Hangzhou, China, Oct. 17-19, 2008.

3. Organic optocouplers with organic photodiodes.  BIT's 1st Annual World Congress of Nano-Science and Technology. Dalian, China, Oct. 23-26, 2011.

4. Solution-processed Oxide Thin Film Transistor. China-Australia Symposium on Optoelectronic Materials and Devices. 2011 International Photonics and OptoElectronics Meetings. Wuhan, China, Nov. 2-5, 2011


Patents Granted

1. Patent Number: ZL 00120790.3

Title: “A Treating Method of Glass Substrate for Organic Light Emitting Diode”

2. Patent Number: ZL 01115644.9

Title: “A Driving Method and System for Organic Light Emitting Diode”

3. Patent Number: ZL 01141848.6

Title: “A Driving Circuit System for Organic Light Emitting Diode”

4. Patent Number: ZL 01136393.2

Title: “A Driving Method and Circuit System for OLED Gray Display”

5. Patent Number: ZL 01134676

Title: “An Organic Thin Film Transistor and Its Manufacturing Method”

6. Patent Number: ZL 200810246836.4

Title: “Organic Thin Film Transistor”

7. Patent Number: ZL 200810118046.8

Title: “Thin film transistor and preparation of semiconductor film”


Recent Publications

Xiaohui Liu, Guifang Dong*, Lian Duan, Liduo Wang and Yong Qiu. High performance low-voltage organic phototransistors: interface modification and the tuning of electrical, photosensitive and memory properties. Journal of Material Chemistry, 2012, 22, 11836-11842.

Dong Li, Guifang Dong*, Lian Duan, Liduo Wang, and Yong Qiu. New Method of Mobility Measurement for Organic Semiconductors by Optoelectronic Coupling. J. Phys. Chem. C, 2012, 116 (8), 5235–5239.

Yunlong Zhao, Guifang Dong, Lian Duan, Juan Qiao, Deqiang Zhang, Liduo Wang and Yong Qiu.Impacts of Sn precursors on solution-processed amorphous zinc–tin oxide films and their transistors. RSC Advances, 2012,2, 5307-5313.

iujian Sun, Guifang Dong*, Haoyan Zhao, Juan Qiao, Xiaohui Liu, Lian Duan, Liduo Wang, Yong Qiu*. Modulated intermolecular electrostatic interaction and morphology transition in squarylium dyes based organic field-effect transistors. Organic Electronics, 2011, 12, 1674-1682.

Qiujian Sun, Guifang Dong*, Haiyang Zheng, Haoyan Zhao, Juan Qiao, Lian Duan, Liduo Wang, Fushi Zhang, Yong Qiu. Indolium Squarine Semiconductor for Field-Effect Transistors. Acta Physico-Chimica Sinica, 2011, 27 (8), 1893-1899.

Qiujian Sun, Guifang Dong*, Liduo Wang, Yong Qiu. Organic optocouplers. Science China, Chemistry, 2011,54(7),1017-1026.

Peng Wei, Joon Hak Oh, Guifang Dong, and Zhenan Bao. Use of a 1H-Benzoimidazole Derivative as an n-Type Dopant and To Enable Air-Stable Solution-Processed n-Channel Organic Thin-Film Transistors. Journal of America Chemistry Society, 2010, 132, 8852–8853.

Liang Chen, Guifang Dong, Lian Duan, Liduo Wang, Juan Qiao, Deqiang Zhang, andYong Qiu*. Poistional disorder induced mobility enhancement in rapidly cooled organic semiconductor melts. J. Phys. Chem. C, 2010, 114, 9056-9061

Guifang Dong, Haiyang Zheng, Lian Duan, Liduo Wang, and Yong Qiu *.High performance organic optocouplers based on a C60/NPB photosensitive interfacial heterojunction.Advanced Materials. 2009,21, 2501-2504

Guifang Dong* and Yong Qiu.Pentacene Thin-Film Transistors with Ta2O5 as the Gate Dielectric. Journal of the Korean Physical Society, 2009, 54(1), 493-497.

Liang Chen, Guifang Dong, Lian Duan, Liduo Wang, Juan Qiao, Deqiang Zhang, andYong Qiu*. One Order of Magnitude Enhancement of Electron Mobility by Rapid Cooling the Melt of an n-Type Organic Semiconductor. J. Phys. Chem. C, 2009,113, 16549–16552.

Guifang Dong, Yuexiang Lu, Xiao Yan Wang, and Yong. QiuBa0.6Sr0.4TiO3 Thin Films used as Gate Dielectric in Pentacene Transistors. The Electrochemical Society Transactions: Thin Film Transistors 9, 2008, 16(9), 291-294.

Dong Guifang*, Liu Q ingdi, Wang Liduo, Qiu Yong, Variation of different characteristic parameters of pentacene/poly(methyl methacrylate) transistors under electric stress. Chinese Physics Letters, 2008, 5( 9), 3375-3377.

Wei Wang, Juan Qiao, Guifang Dong, Liduo Wang, Lian Duan, Deqiang Zhang, Yong Qiu*. Metal halide/N-donor organic ligand hybrid materials with confined energy gaps and emissions. European Journal of Inorganic Chemistry, 2008, 19, 3040-3045.

Wei. Wang, Guifang Dong*,Liduo, Wang, Yong Qiu.  Pentacene thin-film transistors with sol-gel derived amorphous Ba0.6Sr0.4TiO3 gate dielectric . Microelectronic Engineering, 2008,85(2), 414-418.

Liang Chen,Guifang Dong, Lian Duan, Liduo Wang, Juan Qiao, Deqiang Zhang, and Yong Qiu*. Liquid-Formed Glassy Film of N,N’-Diphenyl-N,N’-bis(3- methylphenyl)benzidine: Formation, Carrier Transporting Ability, Photoluminescence, and Stability. J. Phys. Chem. C, 2007, 111, 18376-18380.

XiaoChunGuo, Guifang Dong *  Yong Qiu . Electrical bistable characteristics of poly(phenylenesulfide) thin film deposited by thermal evaporation. Chinese Science Bulletin, 2007,52(6),732-735.

Yihua Zhao, Guifang Dong*, Liduo Wang, Yong Qiu.Improved photo-stability of organic thin film transistors with tantalumoxide/poly(4-vinyl phenol) double gate insulators. Applied Physics Letters, 2007, 90, 252110-1-3.

Yihua Zhao, Guifang Dong*, Liduo Wang, Yong Qiu. Improved Performance of Organic Thin Film Transistor With an Inorganic Oxide/Plymor Double-Layer Insulator.Chin Phys Lett. , 2007, 24(6),1664-1667.

Yan Hu, Guifang Dong*, Yuanchuan Hu, LiduoWang and Yong Qiu.Oxygen effect on the electrical characteristics of pentacene transistors.Journal of Physics DApplied Physics, 2006, 39, 4553–4556.

Yan Hu,Guifang Dong*, Chen Liu, Liduo Wang, and Yong Qiu. Dependency of organic phototransistor properties on the dielectric layers, Applied Physics Letters, 2006, 89(5), 072108-1-3.

Guifang Dong, Yan Hu, Chongyun Jiang, Liduo Wang, and Yong Qiu*. Organic photocouplers consisting of organic light-emitting diodes and organic photoresistors. Applied Physics Letters, 2006, 88(5), 051110-1-3.

Yan Hu, Guifang Dong, Liduo Wang and Yong Qiu*. Phototransistor Properties of Pentacene Organic Transistors with Polymethyl Methacrylate Dielectric Layer. Japanese Journal of Applied Physics, Part.2, 2006, 45(3), 96-98.

Dong Guifang, Liu QingDi, Wang LiDuo,Qiu Yong. Improvement of Performance of Organic Thin-Film Transistors through Zone. Chinese physics letters, 2005, 22(8), 2027-2030.

Yan Hu, Guifang Dong, Yan Liang, Liduo Wang, Yong Qiu. Research on operating degradation of pentacene thin-film transistors. Japanese Journal of Applied Physics, 2005, 44(2), L938-L940.

Yan Liang, Guifang Dong*, Yan Hu, Liduo Wang, and Yong Qiu*. Low-voltage pentacene thin-film transistors with Ta2O5 gate insulators and their reversible light-induced threshold voltage shift. Applied Physics Letters, 2005,86(13), 132101-1-3.

Yong Qiu,Yuanchuan Hu, Guifang Dong, Liduo Wang, Junfeng Xie,Yaning Ma .H2O effect on the stability of organic thin-film field-effect transistors. Applied Physics Letters, 2003, 83(15), 1644-1646.

Yong Qiu, Yuanchuan Hu, Guifang Dong, Liduo Wang, Junfeng Xie,Yaning Ma. Preparation and characteristics research of flexible all-organic thin-film field-effect transistor. Chinese Science Bulletin, 2003, 48(15), 1554-1557.

Yong Qiu, Yuanchuan Hu, Guifang Dong, Liduo Wang, Yudi Gao Preparation of organic thin-film field effect transistor. Chinese Science Bulletin, 2002, 47(18), 1529-1532.

Yong Qiu, Guifang Dong, Xiaoming Hu, et al. Response Time Measuring System for Organic Electroluminescent Devices. Instrumentation Science & Technology, 2001,29(1), 1-6.