Anti-Oxidizing Radical Polymer-Incorporated Perovskite Layers and their Photovoltaic Characteristics in Solar Cells.,ChemSusChem

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Anti-Oxidizing Radical Polymer-Incorporated Perovskite Layers and their Photovoltaic Characteristics in Solar Cells.
ChemSusChem ( IF 7.5 ) Pub Date : 2019-10-30 , DOI: 10.1002/cssc.201901601
Koki Suwa ₁ , Kenichi Oyaizu ₁ , Hiroshi Segawa ₂ , Hiroyuki Nishide ₁

Affiliation

A small amount of a radical-bearing redox-active polymer, poly(1-oxy-2,2,6,6-tetramethylpiperidin-4-yl methacrylate) (PTMA), incorporated into the photovoltaic organo-lead halide perovskite layer significantly enhanced durability of both the perovskite layer and its solar cell and even exposure to ambient air or oxygen. PTMA acted as an eliminating agent of the superoxide anion radical formed upon light irradiation on the layer, which can react with the perovskite compound and decompose it to lead halide. A cell fabricated with a PTMA-incorporated perovskite layer and a hole-transporting polytriarylamine layer gave a photovoltaic conversion efficiency of 18.8 % (18.2 % for the control without PTMA). The photovoltaic current was not reduced in the presence of PTMA in the perovskite layer probably owing to a carrier conductivity of PTMA. The incorporated PTMA also worked as a water-repelling coating for providing humidity-resistance to the organo-lead halide perovskite layer.

中文翻译：

掺有抗氧自由基聚合物的钙钛矿层及其在太阳能电池中的光伏特性。

掺入光伏有机铅卤化物钙钛矿层中的少量带有自由基的氧化还原活性聚合物聚（1-氧-2,2,6,6-四甲基哌啶-4-甲基丙烯酸甲酯）（PTMA）钙钛矿层及其太阳能电池的耐久性，甚至可以暴露于环境空气或氧气中。PTMA充当光照射在该层上形成的超氧阴离子自由基的消除剂，该超氧阴离子自由基可与钙钛矿化合物反应并将其分解为卤化铅。用掺有PTMA的钙钛矿层和空穴传输的聚三芳基胺层制成的电池的光电转换效率为18.8％（对于没有PTMA的对照，为18.2％）。在钙钛矿层中存在PTMA时，光伏电流并未降低，这可能是由于PTMA的载流子导电性所致。

更新日期：2019-10-30

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