A Cross-Linkable Electron-Transport Layer Based on a Fullerene-Benzoxazine Derivative for Inverted Polymer Solar Cells.,ChemPlusChem

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A Cross-Linkable Electron-Transport Layer Based on a Fullerene-Benzoxazine Derivative for Inverted Polymer Solar Cells.
ChemPlusChem ( IF 3.0 ) Pub Date : 2020-07-06 , DOI: 10.1002/cplu.202000354
Sandeepa Kulala Vittala _{1,

2} , Remya Ravi _{1,

2} , Biswapriya Deb _{1,

2} , Joshy Joseph _{1,

2}

Affiliation

The synthesis, optoelectronic characterization and device properties of a cross‐linkable fullerene derivative, [6,6]‐phenyl‐C₆₁‐butyric benzoxazine ester (PCBB) is reported. PCBB shows all the basic photophysical and electrochemical properties of the parent compound [6,6]‐phenyl‐C₆₁‐butyric methyl ester (PCBM). Thermal cross‐linking of the benzoxazine moiety in PCBB resulted in the formation of cross‐linked, solvent resistive adhesive films (C−PCBB). Atomic force microscopy (AFM) and optical microscopic studies showed dramatic reduction in the roughness and aggregation behaviour of P3HT‐PCBM polymer blend film upon incorporation of C−PCBB interlayer. An inverted bulk heterojunction solar cell based on the configuration ITO/ZnO/C−PCBB/P3HT‐PCBM/V₂O₅/Ag achieved 4.27 % power conversion efficiency (PCE) compared to the reference device ITO/ZnO/P3HT‐PCBM/V₂O₅/Ag (PCE=3.28 %). This 25 % increase in the efficiency is due to the positive effects of C‐PCBB on P3HT/C‐PCBB and PCBM/C‐PCBB heterojunctions.

中文翻译：

基于富勒烯-苯并恶嗪衍生物的可交联电子传输层，用于反型聚合物太阳能电池。

报道了可交联的富勒烯衍生物[6,6]-苯基-C _61-丁酸苯并恶嗪酯（PCBB）的合成，光电特性和器件性能。PCBB显示了母体化合物[6,6]-苯基-C _61-丁酸甲酯（PCBM）的所有基本光物理和电化学性质。PCBB中苯并恶嗪部分的热交联导致形成交联的耐溶剂粘合剂膜（C-PCBB）。原子力显微镜（AFM）和光学显微镜研究表明，掺入C-PCBB中间层后，P3HT-PCBM聚合物共混膜的粗糙度和聚集行为显着降低。基于ITO / ZnO / C-PCBB / P3HT-PCBM / V ₂ O配置的倒装体异质结太阳能电池与参考器件ITO / ZnO / P3HT-PCBM / V ₂ O ₅ / Ag（PCE = 3.28％）相比，₅ / Ag达到4.27％的功率转换效率（PCE ）。效率提高25％是由于C-PCBB对P3HT / C-PCBB和PCBM / C-PCBB异质结的积极影响。

更新日期：2020-07-22

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