Premium
Investigation of Quinquethiophene Derivatives with Different End Groups for High Open Circuit Voltage Solar Cells
Author(s) -
Long Guankui,
Wan Xiangjian,
Kan Bin,
Liu Yongsheng,
He Guangrui,
Li Zhi,
Zhang Yawei,
Zhang Yi,
Zhang Qian,
Zhang Mingtao,
Chen Yongsheng
Publication year - 2013
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201300046
Subject(s) - open circuit voltage , materials science , energy conversion efficiency , photovoltaic system , fabrication , short circuit , heterojunction , molecule , voltage , solar cell , irradiation , solution process , optoelectronics , chemical engineering , analytical chemistry (journal) , organic chemistry , electrical engineering , chemistry , medicine , alternative medicine , pathology , engineering , physics , nuclear physics
Abstract Three quinquethiophene derivatives with different end groups of octyl 2‐cyanoacetate (DCAO5T), 3‐ethylrhodanine (DERHD5T) and 2 H ‐indene‐1,3‐dione (DIN5T) are synthesized in order to obtain higher open circuit voltage ( V oc ) than their septithiophene analogs. The photovoltaic performance of these three molecules as donors and fullerene derivatives as the acceptors in bulk heterojunction solar cells are studied by using the simple solution spin‐coating fabrication process. Among them, DERHD5T shows V oc as high as 1.08 volt and power conversion efficiency of 4.63% under AM 1.5G irradiation (100 mW cm −2 ). The reasons for the high V oc were investigated by the theoretical simulations and consistent results have been obtained in comparison with experimental measurements.