Qianfei Xu






Post Doctoral Fellow
Dept of Mechanical and Aerospace Engineering
University of California , Los Angeles
Advisor: Dr. Yong Chen



Current Research

Nano Fabrication and Nano-electronics

Education

2004 Ph.D in Materials Science and Engineering
University of California , Los Angeles
Thesis title: Organic electronic devices via interface engineering
Thesis Advisor: Dr. Yang Yang


2000 MS in Materials Science and Engineering
Zhejiang University , Hangzhou , China


1992 BS in Materials Science and Engineering
University of Electronic Science and Technology of China(UESTC)



Honors and Awards

Outstanding Ph.D in the School of Engineering and Applied Science, UCLA (2004)

The Chancellor Dissertation Fellowship, UCLA (2003-2004).

Outstanding Master Student, Zhejiang Univ. (2000)

Guanghua Scholarship, Zhejiang Univ. (1997~1998,1998~1999)

Xiaxing Scholarship, Zhejiang Univ. (1998~1999)

University Scholarships for 4 years, UESTC (1988~1992)

 

Publications

  1. Colin Stuart, Qianfei Xu, Ricky J. Tseng, H. Thomas Hahn, Yang Yang, Yong Chen, Wei Wu and R. Stanely Williams, Nanofabrication module integrated with optical aligner, Submitted to J. of Vacuum Science & Technology B, 2005

  2. Jinsong Huang, Gang Li, Elbert Hsing-En Wu, Qianfei Xu and Yang Yang, High efficiency white polymer fluorescence light emitting diodes using a novel structure, Advanced Materials, accepted, 2005 (serve as corresponding author)

  3. Seungmoon Pyo, Liping Ma, Jun He, Qianfei Xu, Yang Yang and Yongli Gao, Experimental study on thinckness-related electrical characteristics in organic/metal-nanocluster/organic systems, J. Appl. Phys., 98, 054303, 2005

  4. Qianfei Xu , Jinsong Huang and Yang Yang, High efficient polymer light-emitting diodes: the effect of charge balance and accumulation, Journal of the Society for Information Display, 13, 411, 2005

  5. Jianyong Ouyang, Qianfei Xu, Chi-Wei Chu, Yang Yang, Gang Li, and Joseph Shinar, Study o n the mechanism of conductivity enhancement in poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) film through solvent treatment, J. of Polymer, 45, 8443, 2004

  6. Jianyong Ouyang, Chi-Wei Chu, Fang-Chung Chen, Qianfei Xu, and Yang Yang, High-conductivity poly(3,4-ethylenendioxythiophene):polystryrenesulfonate film and its application in polymer optoelectronic devices, Advanced Functional Materials, 15, 203, March 2005
  7. Qianfei Xu , Yang Yang, Hieu M. Duong, and Fred Wudl, Bright white polymer light-emitting diodes based on single polymer layer doped by a novel “twistacene”, Appl. Phys. Lett. 85, 3357, 2004

  8. Liping Ma, Qianfei Xu, and Yang Yang, Organic nonvolatile memory by controlling the dynamic copper-ion concentration within organic layer, Appl. Phys. Lett., Vol 84, 4908, 2004

  9. Fangchung Chen, Qianfei Xu, and Yang Yang, Enhanced efficiency of plastic photovoltaic devices by blending with ionic solid electrolytes, Appl. Phys. Lett., Vol 84, 3181, 2004

  10. Qianfei Xu , Jianyong Ouyang, Yang Yang, Takeyuki Ito and Junji Kido, High efficiency green polymer light-emitting diodes by nano-scale interface modification, Appl. Phys. Lett. Vol 83, 4695, 2003

  11. Liping Ma, Seungmoon Pyo, Jianyong Ouyang, Qianfei Xu, and Yang Yang, Nonvolatile electrical bistability of organic/metal-nanocluster/organic system, Appl. Phys. Lett. 82, 1419, 2003


  12. Liping M a, Jie Liu, Seungmoon Pyo, Qianfei Xu, Yang Yang, Organic bistable devices, Molecular Crystals and Liquid Crystals, 378, 185-192, 2002

  13. Zhenguo Ji, Qianfei Xu, Ling Zhu, Longcheng Wang, Xiangxin Rui, Effects of HCl vapor on TiOPc films by vacuum vapor deposition (in Chinese), Vacuum Science and Technology (China), Vol 22, 94, 2002

  14. Zhenguo Ji, Jun Yuan, Qianfei Xu, Mang Wang, and Duanlin Que, X-ray irradiation induced peak shift of Cu 2p3/2 photoelectron emission and intra-molecule charge transfer in copper phthalocyanine (in Chinese), Vacuum Science and Technology (China), Vol 21, 14, 2001

  15. Qianfei Xu , Jun Yuan, Zhenguo Ji, Duanlin Que, Photo-acoustic Spectroscopy and its Application in Materials Analysis (in Chinese), Material Science and Engineering ( China ), Vol. 4, 1999

  16. Qianfei Xu , Zhenguo Ji, Mingsheng Xu, Jun Yuan, Mang Wang, HongzhenChen, Duanlin Que, UHV Deposition of Copper Phthalocyanine Thin Film and its X-ray Photoelectron Spectroscopy, Asian Conference of Chemical Vapor Deposition, Shanghai, 5’99, China

  17. Qianfei Xu , Zhenguo Ji, Jun Yuan, Mingsheng Xu, Mang Wang, XPS Study of Copper Phthalocyanine Prepared by Ultra High Vaccum Deposition (in Chinese), Vacuum Electronic ( China ), No. 1, P.36~40, 2000

  18. Mingsheng Xu, Zhenguo Ji, Qianfei Xu, Jun Yuan, Mang Wang, HongzhenChen, Duanlin Que, Photconductive Properties of ClAlPc and ClInPc Composite Thin Film Prepared by Physical Vapor Deposition Approach, Thin Solid Films, Vol. 368, P. 300~302, 2000

  19. Mingsheng Xu, Zhenguo Ji, Qianfei Xu, Jun Yuan, Mang Wang, Hongzhen Chen, Duanlin Que, Physical Vapor Deposition and Photoconductivity of TiOPc Thin Film, Asian Conference of Chemical Vapor Deposition, Shanghai, 5’99, China

  20. Zhenguo Ji, Qianfei Xu, Jun Yuan, Mang Wang, Hongzhen Chen, Duanlin Que, Y.Ueda, XPS Study of Vacuum Deposited Lead Phthalocyanine Film Exposing to HCl, Asian Conference of Chemical Vapor Deposition, Shanghai, 5’99, China

  21. Zhenguo Ji, Jun Yuan, Qianfei Xu, Mingshen Xu, Narrow Photo-luminescent Band for Nanometer Silocon/SiO 2 Film (in Chinese), Semiconductor Optoelectronics (China), Vol.20, No.5, P.315~317, 1999

  22. Zhenguo Ji, Mingsheng Xu, Jun Yuan, Qianfei Xu, XPS and UV-Vis Absorption Spectra of Vacuum Deposited Metal Phthalocyanine Exposing to Acid Vapor, IUMIS ICAM’99 Symposium, Beijing 6’99, China



Conference Presentations




  1. Invited talk, Title “High efficiency green polymer LEDs via nano-scale interface modification”, Asian Symposium on Information Display’04, Feb. 14-17, 2004 , Nanjing , China

  2. Participation of SPIE’s 48 th annual meeting, Aug 3-8, 2003 , San Diego , CA , USA

  3. Oral presentation, Title “High efficiency green polymer light-emitting diodes via nano-scale interface engineering”, 2003 SCCAVS Symposium on Nanotechnology, Oct. 7, 2003, Anaheim, CA, USA

  4. Oral presentation, Title “A novel organic bistable device ”, 2003 MRS Spring Meeting, April 21 – 25, 2003, San Francisco, CA, USA

  5. Participation of 3 rd International Conference on Elelctroluminescence of Molecular Materials and Related Phenomena, UCLA, Sept 3-5, 2001 , Los Angeles , CA , USA

  6. Oral presentation, Title “UHV Deposition of Copper Phthalocyanine Thin Film and its X-ray Photoelectron Spectroscopy”, Asian Conference of Chemical Vapor Deposition, May 2 – 5, 1999 , Shanghai , China


Patent


Contact Information

44-116C Engineering IV
420 Westwood Plaza
Los Angeles, CA 90095

Phone: 310-267-4340
E-mail:qf_xu@yahoo.com