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A Ladder-like Dopant-free Hole-Transporting Polymer for Hysteresis-less High-Efficiency Perovskite Solar Cells with High Ambient Stability.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-07-16 , DOI: 10.1002/cssc.202001350 Thanyarat Chawanpunyawat 1 , Patteera Funchien 1 , Praweena Wongkaew 1, 2 , Nakorn Henjongchom 1 , Atthaporn Ariyarit 1 , Somlak Ittisanronnachai 1 , Supawadee Namuangruk 3 , Rongrong Cheacharoen 4 , Taweesak Sudyoadsuk 1 , Fabrice Goubard 5 , Vinich Promarak 1, 2
ChemSusChem ( IF 7.5 ) Pub Date : 2020-07-16 , DOI: 10.1002/cssc.202001350 Thanyarat Chawanpunyawat 1 , Patteera Funchien 1 , Praweena Wongkaew 1, 2 , Nakorn Henjongchom 1 , Atthaporn Ariyarit 1 , Somlak Ittisanronnachai 1 , Supawadee Namuangruk 3 , Rongrong Cheacharoen 4 , Taweesak Sudyoadsuk 1 , Fabrice Goubard 5 , Vinich Promarak 1, 2
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Perovskite solar cells (PSCs) have received high attention in the past few years due to their terrific photovoltaic performance and potentially low production cost. However, the use of hole transport materials (HTMs) with hygroscopic dopants, which cause the inevitable instability of device performance, has hampered commercialization. Herein, a dopant‐free polymeric HTM with functional aromatic rings was used to optimize the HTM/perovskite interface and employed in a planar n‐i‐p configuration. Poly(1,4‐(2,5‐bis((2‐butyloctyloxy)phenylene)‐2,7‐(5,5,10,10‐tetrakis(4‐hexylphenyl)‐5,10‐dihydro‐s‐indaceno[2,1‐b:6,5‐b′]dithiophene)) (IDTB) co‐polymer constructed with indaceno[1,2‐b:5,6‐b′]dithiophene and bis(alkyloxy)benzene units adopts an S⋅⋅⋅O intramolecular bond linked ladder‐like planar conjugated polymer backbone. Without any dopant, the hole mobility of IDTB is in the same order of magnitude as a doped 2,2′,7,7′‐tetrakis[N,N‐di(4‐methoxyphenyl)amino]‐9,9′‐spirobifluorene (spiro‐OMeTAD). Also, the hydrophobic nature of IDTB facilitated the long‐term stability of the perovskite underneath. The unencapsulated PSC devices made of IDTB‐based HTM achieved a power conversion efficiency of 19.38 % with a high moisture stability, retaining above 80 % of initial power conversion efficiency at 65 % relative humidity for more than 10 days. The superior passivation effect to perovskite surface made a hysteresis of 0.44 % was almost the least reported for regular planar undoped polymer HTM PSCs.
中文翻译：
一种无梯形的无掺杂空穴传输聚合物，用于具有高环境稳定性的无磁滞高效钙钛矿太阳能电池。
钙钛矿太阳能电池（PSC）在过去几年中因其出色的光伏性能和较低的生产成本而受到了高度关注。然而，将空穴传输材料（HTM）与吸湿性掺杂剂一起使用会导致器件性能不可避免地不稳定，这阻碍了其商业化。本文中，具有功能性芳环的无掺杂聚合物HTM用于优化HTM /钙钛矿界面，并用于平面n-i-p配置。聚（1,4‐（2,5‐双（（2‐丁基辛基氧基）亚苯基）‐2,7‐（5,5,10,10‐四（4‐己基苯基）‐5,10‐dihydro‐s‐indaceno [2,1-b：6,5-b']二噻吩））（IDTB）共聚物是由茚并[[1,2-b：5,6-b']二噻吩和双（烷氧基）苯单元合成的） S⋅⋅⋅O分子内键连接的梯状平面共轭聚合物主链，没有任何掺杂剂，N，N-二（4-甲氧基苯基）氨基] -9,9'-螺二芴（spiro-OMeTAD）。另外，IDTB的疏水性促进了钙钛矿下面的长期稳定性。由基于IDTB的HTM制成的未封装的PSC器件实现了19.38％的功率转换效率，并具有很高的湿气稳定性，在65％的相对湿度下可以保持80％的初始功率转换效率超过10天。对于常规的平面无掺杂聚合物HTM PSC，对钙钛矿表面具有优异的钝化效果，具有0.44％的磁滞，几乎是报道最少的。
更新日期：2020-09-24
中文翻译：
一种无梯形的无掺杂空穴传输聚合物，用于具有高环境稳定性的无磁滞高效钙钛矿太阳能电池。
钙钛矿太阳能电池（PSC）在过去几年中因其出色的光伏性能和较低的生产成本而受到了高度关注。然而，将空穴传输材料（HTM）与吸湿性掺杂剂一起使用会导致器件性能不可避免地不稳定，这阻碍了其商业化。本文中，具有功能性芳环的无掺杂聚合物HTM用于优化HTM /钙钛矿界面，并用于平面n-i-p配置。聚（1,4‐（2,5‐双（（2‐丁基辛基氧基）亚苯基）‐2,7‐（5,5,10,10‐四（4‐己基苯基）‐5,10‐dihydro‐s‐indaceno [2,1-b：6,5-b']二噻吩））（IDTB）共聚物是由茚并[[1,2-b：5,6-b']二噻吩和双（烷氧基）苯单元合成的） S⋅⋅⋅O分子内键连接的梯状平面共轭聚合物主链，没有任何掺杂剂，N，N-二（4-甲氧基苯基）氨基] -9,9'-螺二芴（spiro-OMeTAD）。另外，IDTB的疏水性促进了钙钛矿下面的长期稳定性。由基于IDTB的HTM制成的未封装的PSC器件实现了19.38％的功率转换效率，并具有很高的湿气稳定性，在65％的相对湿度下可以保持80％的初始功率转换效率超过10天。对于常规的平面无掺杂聚合物HTM PSC，对钙钛矿表面具有优异的钝化效果，具有0.44％的磁滞，几乎是报道最少的。
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