Efficient and stable panchromatic squaraine dyes for dye-sensitized solar cells.
A new series of stable, unsymmetrical squaraine near-IR sensitizers (JK-216 and JK-217), which are assembled using both thiophenyl pyrrolyl and indolium groups, exhibit a panchromatic light harvesting up to 780 nm. The JK-216 based cell exhibited a record efficiency of 6.29% for near-IR DSSCs. In addition, the JK-217 device showed an excellent stability under a light soaking test at 60 °C for 1000 h.
Department of New Material Chemistry, Korea University, Jochiwon, Chungnam 339-700, Korea.
Sanghyun
S
Paek
Hyunbong
H
Choi
Chulwoo
C
Kim
Nara
N
Cho
Seulgi
S
So
Kihyung
K
Song
Mohammad K
MK
Nazeeruddin
Jaejung
J
Ko