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首页> 外文期刊>Advanced Functional Materials >Additive-Free Bulk-Heterojuction Solar Cells with Enhanced Power Conversion Efficiency, Comprising a Newly Designed Selenophene-Thienopyrrolodione Copolymer
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Additive-Free Bulk-Heterojuction Solar Cells with Enhanced Power Conversion Efficiency, Comprising a Newly Designed Selenophene-Thienopyrrolodione Copolymer

机译：包含新型设计的硒烯-噻吩并吡咯二酮共聚物的无添加剂大体积异质结太阳能电池，具有增强的功率转换效率

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摘要

Bulk-heterojunction solar cells are reported with an enhanced power conversion efficiency (PCE) based on a newly designed semiconducting selenophene-thienopyrrolodione (TPD) copolymer blended with [6,6]-phenyl C_(71) butyric acid methyl-ester. The solar cells are fabricated using simple solution processing (implying low-cost fabrication). The relatively deep highest occupied molecular orbital (HOMO) level leads to a correspondingly high open-circuit voltage of 0.88 V. The PCE approaches 5.8% when Clevious P VP AI4083 is used as the hole-transport interlayer, with an optimized active layer thickness of approximately 95 nm, and a donor-acceptor blend ratio of 1:1. A fill factor (FF) of 0.62 is achieved. The use of additives does not seem to be beneficial in this blended system, due to the achievement of proper phase separation in the as-cast films. Also, the BHJ devices with a 3% ratio of a 1-chloronaphthalene (CN) additive exhibit much more severe oxidative degradation from the decreased FF with a high series resistance than BH) devices without additive. The selenophene-TPD based BHJ solar cell is a promising candidate for high-performance single cells with a low-cost additive-free fabrication and a long-term stable operation.
机译：据报道，基于新设计的与[6,6]-苯基C_（71）丁酸甲基酯共混的半导体硒烯-噻吩并吡咯二酮（TPD）共聚物，具有增强的功率转换效率（PCE）的体-异质结太阳能电池。使用简单的溶液处理工艺来制造太阳能电池（这意味着低成本的制造工艺）。相对较深的最高占据分子轨道（HOMO）能级会导致0.88 V的较高开路电压。当使用Clevious P VP AI4083作为空穴传输中间层时，PCE接近5.8％，且有源层厚度最优化为大约95 nm，供体与受体的混合比为1：1。填充系数（FF）达到0.62。由于在铸膜中实现了适当的相分离，因此在这种共混体系中使用添加剂似乎无益。同样，与不含添加剂的BH）器件相比，具有3％比率的1-氯萘（CN）添加剂的BHJ器件由于FF减小而具有较高的串联电阻，因此会表现出更严重的氧化降解。基于硒烯-TPD的BHJ太阳能电池是低成本，无添加剂制造和长期稳定运行的高性能单电池的有希望的候选者。

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  • 来源
    《Advanced Functional Materials》 |2013年第10期|1297-1304|共8页
  • 作者

    Dong Hwan Wang; Agnieszka Pron; Mario Leclerc; Alan J. Heeger;

  • 作者单位

    Center for Polymers and Organic Solids University of California at Santa Barbara Santa Barbara, California 93-106-5090, USA;

    Department of Chemistry Universite Laval Quebec City, QC, G1V 0A6, Canada;

    Department of Chemistry Universite Laval Quebec City, QC, G1V 0A6, Canada;

    Center for Polymers and Organic Solids University of California at Santa Barbara Santa Barbara, California 93-106-5090, USA;

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