JUNE 8-13, 2014 • DENVER, COLORADO
55
TECHNICAL PROGRAM
2:30
(19) Can a hot-carrier solar cell also be an
efficient up-converter?
Daniel J Farrell, Hassanet Sodabanlu, Yunpeng
Wang, Masakazu Sugiyama, Yoshitaka Okada
Research Center for Advanced Science and
Technology (RCAST), The University of Tokyo, 4-6-
1 Komaba, Meguro-ku, Tokyo 153-8504, Japan,
Tokyo, Japan
2:45
(20) Increasing Efficiency of Dual Junction Solar
Cells by Intermediate Mirror Optimization
Vidya Ganapati, Chi-Sing Ho, Eli Yablonovitch
University of California, Berkeley, Berkeley, CA, USA
3:00
(21) Enhance Current Density and Power
Conversion Efficiency in Solar Cells by Using
luminescent downshifting phosphor
Hau-Vei Han
1
, Chien-Chung Lin
2
, Wein-Yi Lin
1
, Yu-
Lin Tsai
1
, Tien-Lin Shen
1
, Hao-Chung Kuo
1
, Peichen
Yu
1
1
National Chiao Tung University, Hsinchu, Taiwan,
2
National Chiao Tung University, Tainan, Taiwan
3:15
(22) Color, Graphic Design and High Efficiency
for Photovoltaic Modules
Efthymios Klampaftis
1
, David Ross
1
, Bryce S.
Richards
1,2
1
Heriot-Watt University, Edinburgh, UK,
2
Nelson
Mandela African Institute of Science and Technology,
Tengeru, Tanzania
Area 2 - Orals
2:00 - 3:30 PM
MR 502-504
Kesterite 1
Chair(s): Rakesh Agrawal, Guy Brammertz
2:00
(23) Current Status and Future Prospects of
Earth Abundant Kesterite Photovoltaics
David B. Mitzi
1
, Teodor Todorov
1
, Oki Gunawan
1
,
Tayfun Gokmen
1
, Wei Wang
1
, Mark T. Winkler
1
,
Richard Haight
1
, Sean Seefeld
1
, Liang-Yi Chang
1
,
Byungha Shin
1
, Talia Gershon
1
, Supratik Guha
1
,
Masaru Kuwahara
2
, Akimasa Nakamura
2
, Homare
Hiroi
3
, Hiroki Sugimoto
3
1
IBM T. J. Watson Research Center, Yorktown
Heights, NY, USA,
2
Tokyo Ohka Kogyo Co., Ltd.,
Kawasaki, Japan,
3
Solar Frontier K. K., Atsugi,
Japan
2:30
(24) Over 12% Efficiency Cu
2
ZnSn(SeS)
4
Solar
Cell Via Hybrid Buffer Layer
Homare Hiroi
1,2
, Jeehwan Kim
3
, Masaru Kuwahara
4
,
Teodor K Todorov
3
, Dhruv Nair
3
, Marinus
Hopstaken
3
, Yu Zhu
3
, Oki Gunawan
3
, David B. Mitzi
3
,
Hiroki Sugimoto
1,2
1
Showa Shell Sekiyu K.K., Kanagawa, Japan,
2
Solar
Frontier K.K., Kanagawa, Japan,
3
IBM Corporation,
Yorktown, NY, USA,
4
Tokyo Ohka Kogyo Co., Ltd.,
Kanagawa, Japan
2:45
(25) Different bandgaps in Cu
2
ZnSnSe
4
; A high
temperature coevaporation study
Alex Redinger, Jan Sendler, Rabie Djemour, Thomas
Paul Weiss, Germain Rey, Susanne Siebentritt
University of Luxembourg, Laboratory for
photovoltaics, Belvaux, Luxembourg
