321 Hawks Nest Circle, Rochester, NY 14626
I have broad experience in developing organic and inorganic (III-V and II-IV nanocrystals) materials with novel photophysical and electronic properties, particularly in various aspects of materials design, synthesis, characterization and testing in devices. I have been the principal investigator in various research projects to create new materials for optoelectronic devices. Specific topics included organometallic phosphorescent materials, organic electron and hole transporting materials, and II-VI and III-V compound semiconductor nanocrystals for light-emitting diode and phosphor applications for solid state lighting. Over the years, I’ve also developed expertise in understanding of the photophysical processes and the mechanism of charge generation/migration/recombination in organic/inorganic materials, and in structure design and optimization of optoelectronic and related devices. I am foremost an experimentalist with 12 years of laboratory exp erience in semiconductor materials and devices. I enjoy learning and developing new material systems, processes, and characterization methods. I have successfully demonstrated novel materials by innovating new designs and processes at both the academic and industrial level. I have developed many new ideas that have resulted in various patents and new products.
1999-2004, University of Southern California (美国南加洲大学),
材料化学博士学位 (Ph.D.) 导师 (Advisor）: Dr. Mark E. Thompson
1996-1998, 中国科学技术大学, 高分子化学硕士教程(无学位).
1992-1996, 合肥工业大学, 高分子工学学士.
2008-至今, 美国柯达总部产品研发实验室, 主任研究员 (principal research scientist).
2004-2008, 美国柯达总部产品研发实验室, 资深研究员 (senior research scientist).
2003-2004, Excellency Predoctoral Fellowship (优秀准博士奖学金), University of Southern California.
1999-2002, Merit Fellowship (荣誉奖学金), University of Southern California.
1997-1998, 光华奖学金, 中国科学技术大学.
1992-1996, 一等奖学金(4次);二等奖学金(3次)， 合肥工业大学.
4. 发表文章 (X. Ren: 任小凡)
X. Ren, M. Kondakova, D. J. Giesen, “Coumarin-based, electron-trapping iridium complexes as highly efficient and stable phosphorescent emitters for organic light-emitting diodes,” Inorg. Chem., 49, 1301 (2010)
X. Ren, D. J. Giesen, M. Rajeswaran, M. Madaras, “Synthesis, characterization, and physical properties of cyclometalated iridium(III) complexes with 2-Phenylthiophene or 2-Phenylfuran ligands,” Organometallics, 28, 6079 (2009)
X. Wang, X. Ren, K. K. Kahen, M. A. Hahn, M. Rajeswaran, S, Maccagnano-Zacher, J. Silcox, G. E. Cragg, A. L. Efros, T. D. Krauss, “Non-blinking Semiconductor Nanocrystals”, Nature, 459, 696-689 (2009).
X. Ren, L. Liao, D. J. Giesen, J. C. Deaton, K. P. Klubek, “Phosphorescence ranging from blue to red from tris-cyclometalated iridium (III) complexes and application to organic light emitting devices,” Digest of Technical Papers - Society for Information Display International Symposium, 39, PP 1997-2000 (2008).
L. Liao, X. Ren, W. J. Begley, Y.-S. Tyan, C. A. Pellow, “Tandem white OLEDs combining fluorescent and phosphorescent emission,” Digest of Technical Papers - Society for Information Display International Symposium, 39, PP 818-821 (2008).
X. Ren, Y.-S. Tyan, M. B. Madaras, M. Rajeswaran, J. C. Deaton, D. J. Giesen, “High-efficiency long-lifetime phosphorescent OLED devices based on electron-trapping iridium (III) complexes,” Digest of Technical Papers - Society for Information Display International Symposium, 38, PP 864-866 (2007).
X. Ren, B. D. Alleyne, P. I. Djurovich, C. Adachi, I. Tsyba, R. Bau, M. E.Thompson “Organometallic complexes as hole-transporting materials in organic light-emitting diodes,” Inorg. Chem.,43, 1697 (2004).
X. Ren, J. Li, R. J. Holmes, P. I. Djurovich, S. R. Forrest, M. E. Thompson, “Ultrahigh energy gap hosts in deep blue organic electrophosphorescent devices,” Chem. Mater.16, 4743 (2004).
R. J. Holmes, B. W. D’Andrade, S. R. Forrest, X. Ren, J. Li, M. E. Thompson, “Efficient, deep-blue organic electrophosphorescence by guest charge trapping,” Appl. Phys. Lett.83, 3818 (2003).
D. Ma, Y. Huang, X. Ren, X. Luo, “Ringed spherulite and lyotropic liquid crystal in poly(ε -caprolactone)/ethyl cellulose blend,” Yingyong Huaxue, 16, 5 (1999).