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首页> 外文期刊>Advanced energy materials >Bis(Naphthalene Imide)diphenylanthrazolines: A New Class of Electron Acceptors for Efficient Nonfullerene Organic Solar Cells and Applicable to Multiple Donor Polymers
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Bis(Naphthalene Imide)diphenylanthrazolines: A New Class of Electron Acceptors for Efficient Nonfullerene Organic Solar Cells and Applicable to Multiple Donor Polymers

机译：双（萘二甲酰亚胺）二苯并菲唑啉类：一种新型的高效非富勒烯有机太阳能电池电子受体，适用于多种施主聚合物

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摘要

Unlike universally applicable fullerene derivatives, current nonfullerene electron acceptors are rarely effective with more than one donor polymer in bulk heterojunction (BHJ) solar cells. A novel class of nonfullerene electron acceptors, bis(naphthalene imide)-3,6-diphenyl-trans-anthrazolines (BNIDPAs), that is applicable and yields efficient photovoltaic devices with multiple donor polymers, including a thiazolothiazole–dithienosilole copolymer (PSEHTT) and benzodithiophene copolymers (PBDTT-FTTE and PTB7) is reported. Photovoltaic devices composed of the BNIDPA-butyloctyl (BO) acceptor with PSEHTT, PBDTT-FTTE, and PTB7, respectively, have power conversion efficiencies of 3.0%–3.1% with high open-circuit voltages of ≈1.0 V. In contrast, BHJ devices composed of BNIDPA-DT acceptor with larger 2-decyltetradecyl chains and the same donor polymers have substantially reduced bulk electron mobility and reduced photovoltaic efficiencies of 1.3%–1.7%, which highlight the critical role of the size of alkyl chains appended onto nonfullerene electron acceptors. The present results provide a rare example of nonfullerene electron acceptors that are capable of pairing with multiple donor polymers to achieve efficient BHJ solar cells.
机译：与普遍适用的富勒烯衍生物不同，当前的非富勒烯电子受体在块状异质结（BHJ）太阳能电池中很少使用一种以上的供体聚合物。一类新型的非富勒烯电子受体，双（萘二甲酰亚胺）-3,6-二苯基-反-蒽唑啉（BNIDPAs），适用并产生具有多种供体聚合物的高效光伏器件，包括噻唑并噻唑-二硫代硅烷共聚物（PSEHTT）和据报道苯并二噻吩共聚物（PBDTT-FTTE和PTB7）。由BNIDPA-丁基辛基（BO）受体与PSEHTT，PBDTT-FTTE和PTB7组成的光伏器件，其功率转换效率为3.0％-3.1％，具有高的开路电压≈1.0V。相比之下，BHJ器件由具有较大的2-癸基十四烷基链的BNIDPA-DT受体和相同的供体聚合物组成，其本体电子迁移率显着降低，光伏效率降低了1.3％–1.7％，这突出说明了烷基链尺寸附加在非富勒烯电子受体上的关键作用。本发明结果提供了非富勒烯电子受体的罕见例子，其能够与多种供体聚合物配对以实现有效的BHJ太阳能电池。

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