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Dithieno[3,2‐b:2′,3′‐d]pyrrol Fused Nonfullerene Acceptors Enabling Over 13% Efficiency for Organic Solar Cells
Advanced Materials ( IF 27.4 ) Pub Date : 2018-03-12 , DOI: 10.1002/adma.201707150 Jia Sun 1 , Xiaoling Ma 2 , Zhuohan Zhang 1 , Jiangsheng Yu 3 , Jie Zhou 1 , Xinxing Yin 1 , Linqiang Yang 1 , Renyong Geng 1 , Rihong Zhu 3 , Fujun Zhang 2 , Weihua Tang 1
Advanced Materials ( IF 27.4 ) Pub Date : 2018-03-12 , DOI: 10.1002/adma.201707150 Jia Sun 1 , Xiaoling Ma 2 , Zhuohan Zhang 1 , Jiangsheng Yu 3 , Jie Zhou 1 , Xinxing Yin 1 , Linqiang Yang 1 , Renyong Geng 1 , Rihong Zhu 3 , Fujun Zhang 2 , Weihua Tang 1
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A new electron‐rich central building block, 5,5,12,12‐tetrakis(4‐hexylphenyl)‐indacenobis‐(dithieno[3,2‐b:2′,3′‐d]pyrrol) (INP), and two derivative nonfullerene acceptors (INPIC and INPIC‐4F) are designed and synthesized. The two molecules reveal broad (600–900 nm) and strong absorption due to the satisfactory electron‐donating ability of INP. Compared with its counterpart INPIC, fluorinated nonfullerene acceptor INPIC‐4F exhibits a stronger near‐infrared absorption with a narrower optical bandgap of 1.39 eV, an improved crystallinity with higher electron mobility, and down‐shifted highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels. Organic solar cells (OSCs) based on INPIC‐4F exhibit a high power conversion efficiency (PCE) of 13.13% and a relatively low energy loss of 0.54 eV, which is among the highest efficiencies reported for binary OSCs in the literature. The results demonstrate the great potential of the new INP as an electron‐donating building block for constructing high‐performance nonfullerene acceptors for OSCs.
中文翻译：
Dithieno [3,2-b：2'，3'-d]吡咯熔融非富勒烯受体，使有机太阳能电池的效率超过13％
一个新的富电子中心结构单元，5,5,12,12-四（4-己基苯基）-茚二酮-（二硫代[3,2- b：2′，3′- d]设计并合成了两个衍生的非富勒烯受体（INPIC和INPIC-4F）。由于令人满意的INP供电子能力，这两个分子显示出宽广的波长（600–900 nm）和强吸收性。与同类INPIC相比，氟化非富勒烯受体INPIC-4F表现出更强的近红外吸收，较窄的光学带隙为1.39 eV，结晶度提高，电子迁移率更高，并且最高占据分子轨道和最低未占据分子轨道能量向下位移水平。基于INPIC-4F的有机太阳能电池（OSC）表现出13.13％的高功率转换效率（PCE）和0.54 eV的相对较低的能量损耗，这是文献中针对二元OSC报道的最高效率之一。
更新日期：2018-03-12
中文翻译：
Dithieno [3,2-b：2'，3'-d]吡咯熔融非富勒烯受体，使有机太阳能电池的效率超过13％
一个新的富电子中心结构单元，5,5,12,12-四（4-己基苯基）-茚二酮-（二硫代[3,2- b：2′，3′- d]设计并合成了两个衍生的非富勒烯受体（INPIC和INPIC-4F）。由于令人满意的INP供电子能力，这两个分子显示出宽广的波长（600–900 nm）和强吸收性。与同类INPIC相比，氟化非富勒烯受体INPIC-4F表现出更强的近红外吸收，较窄的光学带隙为1.39 eV，结晶度提高，电子迁移率更高，并且最高占据分子轨道和最低未占据分子轨道能量向下位移水平。基于INPIC-4F的有机太阳能电池（OSC）表现出13.13％的高功率转换效率（PCE）和0.54 eV的相对较低的能量损耗，这是文献中针对二元OSC报道的最高效率之一。
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