New π-conjugated polymers as acceptors designed for all polymer solar cells based on imide/amide-derivatives
New π-conjugated polymers as acceptors designed for all polymer solar cells based on imide/amide-derivatives
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DOI：
10.1039/c5tc02615f
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发表时间：
2016
影响因子：
6.4
通讯作者：
Yonghai Li;Yang Yang-Yang;X. Bao;Meng Qiu;Zitong Liu;Ning Wang;Guanxin Zhang;Renqiang Yang;
中科院分区：
文献类型：
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作者：
Yonghai Li;Yang Yang-Yang;X. Bao;Meng Qiu;Zitong Liu;Ning Wang;Guanxin Zhang;Renqiang Yang;
本文报道了两种基于酰亚胺/酰胺类化合物(PDI、NDI和DPP)的n型聚合物受体P1和P2。P1和P2表现出非常不同的光学性质，这可能与不同的分子构型和聚合物结晶度有关。所有聚合物太阳能电池都是以聚合物供体PBDTTT-C-T和P1/P2为基础，按常规构型制作的。结果表明，基于P1的器件具有最好的性能，其PCE为2.01%，V-OC为0.68 V，J(Sc)为7.06 mA cm2，FF为41.78%，这归因于器件具有合适的能级、较高的电子迁移率和较好的微相分离。P2的表现不佳(PCE=0.30%)主要归因于其极低的J(Sc)，这可能是由于供体和P2之间的HOMO能级差异很小所致。
In this paper we report two n-type polymeric acceptors P1 and P2 based on imide/amide-derivatives (PDI, NDI and DPP). P1 and P2 exhibit very different optical properties which may be related to the different molecular configuration and polymeric crystallinity. All polymer solar cells were fabricated with conventional configuration based on polymeric donor PBDTTT-C-T and P1/P2. Results reveal that devices based on P1 show the best performance with a PCE of 2.01%, a V-OC of 0.68 V, a J(SC) of 7.06 mA cm 2 and a FF of 41.78%, which is attributed to the appropriate energy levels, relatively high electron mobility and preferable micro-phase separation. The poor performance for P2 ( PCE = 0.30%) was mainly ascribed to its extremely low J(SC) which was probably caused by the small HOMO energy level difference between donor and P2.