基于萘二噻吩二亚胺（NDTI）共聚物的具有高近红外响应的全聚合物太阳能电池。
All-Polymer Solar Cell with High Near-Infrared Response Based on a Naphthodithiophene Diimide (NDTI) Copolymer.
作者信息
Zhou Erjun, Nakano Masahiro, Izawa Seiichiro, Cong Junzi, Osaka Itaru, Takimiya Kazuo, Tajima Keisuke
机构信息
National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, People's Republic of China.
RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako 351-0198, Japan.
出版信息
ACS Macro Lett. 2014 Sep 16;3(9):872-875. doi: 10.1021/mz5004272. Epub 2014 Aug 18.
Polymer-blend solar cells (all-PSCs) based on a copolymer of naphthodithiophene diimide and bithiophene (PNDTI-BT-DT) as a near-infrared absorber as well as an electron acceptor were fabricated in combination with PTB7 as an electron donor. Notably, the external quantum efficiency spectra of the all-PSCs demonstrated photoresponse up to 900 nm with the efficiency of 25% at 800 nm, which is much higher than that for the previously reported all-PSCs. Power conversion efficiency as high as 2.59% was achieved under the irradiation of simulated solar light (AM1.5, 100 mW/cm). Both PNDTI-BT-DT and PTB7 formed a crystalline structure in the blend films similar to in the pristine films, leading to the efficient charge generation contributed from both polymers.
基于萘二噻吩二酰亚胺与联噻吩的共聚物（PNDTI-BT-DT）作为近红外吸收剂以及电子受体，并与作为电子供体的PTB7相结合，制备了聚合物共混太阳能电池（全聚合物太阳能电池）。值得注意的是，全聚合物太阳能电池的外量子效率光谱显示出高达900 nm的光响应，在800 nm处的效率为25%，这远高于先前报道的全聚合物太阳能电池。在模拟太阳光（AM1.5，100 mW/cm²）照射下，实现了高达2.59%的功率转换效率。PNDTI-BT-DT和PTB7在共混薄膜中均形成了与原始薄膜中相似的晶体结构，从而实现了两种聚合物对电荷的高效产生。
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