The mission of the Florida Photonics Cluster (FPC) is to support the growth
and profitability of the photonics industry through the strength of a unified voice.
The driving forces of the FPC are networking opportunities with industry peers,
an expansive resource base, and an educational community focused on
industry input for curriculum development. The FPC is a 501c(6) not-for-profit
Friday, May 22, 2015
SID & IEEE Student Chapters Seminar: "Improving Solar Cell Efficiency beyond Shockley-Quisser Limit by Singlet Fission—Exciton Dynamics in Rubrene and Tetracene Thin Films" by Dr. Jiun-Haw Lee 5.27.15/11:00am-12:00pm/ CREOL RM A214
SID & IEEE Student Chapters Seminar: "Improving
Solar Cell Efficiency beyond Shockley-Quisser Limit by Singlet Fission—Exciton
Dynamics in Rubrene and Tetracene Thin Films" by Dr. Jiun-Haw Lee
Wednesday, May 27, 2015 11:00 AM to 12:00 PM
CREOL Room A214
Celebrating the International Year of Light 2015
Dr. Jiun-Haw Lee
Graduate Institute of Photonics and Optoelectronics and
Department of Electrical Engineering, National Taiwan University
Exciton fission is a process to split one singlet exciton
into two triplet excitons. By dissociating those two excitons into carriers, it
is possible to generate super high internal quantum efficiency (> 100%,
ideally 200%). In our experiments, transient photoluminescence (TRPL) was used
to study exciton fission and fusion dynamics characteristics. Fusion rate
increased with decreasing the film thickness, which was due to the triplet
exciton confinement. Excitons were quenched by Si substrate which showed the
possible energy transfer process between organic material and Si.
Dr. Jiun-Haw Lee received the B.S.E.E., M.S.E.E., and Ph.D.
degrees in electrical engineering in 1994, 1995, and 2000, respectively, all
from National Taiwan University, Taipei, Taiwan.From 2000 to 2003, he was with
the RiTdisplay Corporation as the director. Since 2003, he joined the faculty
of National Taiwan University in the Graduate Institute of Photonics and
Optoelectronics and the Department of Electrical Engineering, where he is
currently a professor. His research interests include organic optoelectronic
devices, display and lighting technologies, and solar cells.He has co-authored
over 80journal papers, over 250conference papers, and 50 patents.