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首页> 外文期刊>Solar Energy >Humidity controlled sol-gel Zr/TiO2 with optimized band alignment for efficient planar perovskite solar cells
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Humidity controlled sol-gel Zr/TiO2 with optimized band alignment for efficient planar perovskite solar cells

机译：湿度控制的溶胶-凝胶Zr / TiO2，具有优化的能带排列，可用于高效平面钙钛矿太阳能电池

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摘要

This work draws attention to environmental influence to function layers interfaces and the band alignment optimization of organic-inorganic metal halide planar perovskite solar cell (PSC), demonstrating an effective route to enhance the PSC photovoltaic conversion efficiency (PCE) and stability. The PCE of the PSC presents a sensitive correlation with the relative humidity (RH) during the electron transport layer (ETL) preparation. Through optimizing the RH condition, the PSCs show outstanding performances using sol-gel TiO2 ETL prepared under 55 RH%. Moreover, we systematically investigate the Zr doping effect in the TiO2 ink with a variation of Zr molar percentages from 0% to 7.5%. A high PCE of 15.06% with a good fill factor of 0.76 is obtained at 2 mol% Zr doping, in contrast to 12.25% of the undoped device. The Mott-Schottky analysis reveals that the elevated open-circuit voltage (Voc) is attributed to the upshifting of flat band potential of TiO2 from -4.15 eV to -4.02 eV (vs. vacuum) after doping. Notably, the as-made cell shows low hysteresis and elevated stability with only 15% degradation of PCE (35% for PSC with pyrolyzed TiO2) after 550 h/14 RH% ageing without encapsulation. (C) 2016 Elsevier Ltd. All rights reserved.
机译：这项工作引起了人们对功能层界面的环境影响以及有机-无机金属卤化物平面钙钛矿太阳能电池（PSC）的能带排列优化的注意，展示了提高PSC光伏转换效率（PCE）和稳定性的有效途径。 PSC的PCE与电子传输层（ETL）制备过程中的相对湿度（RH）呈敏感关系。通过优化RH条件，PSC使用在55 RH％下制备的溶胶-凝胶TiO2 ETL表现出出色的性能。此外，我们系统地研究了Zr摩尔百分比从0％到7.5％变化的TiO2油墨中的Zr掺杂效果。 Zr掺杂量为2 mol％时，PCE为15.06％，填充系数为0.76，而未掺杂器件的PCE为12.25％。 Mott-Schottky分析表明，开路电压（Voc）升高归因于掺杂后TiO2的平带电势从-4.15 eV上升到-4.02 eV（相对于真空）。值得注意的是，在550 h / 14 RH％老化（未封装）后，制成的电池显示出低滞后性和更高的稳定性，PCE的降解仅为15％（对于含热解TiO2的PSC，降解率为35％）。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Solar Energy》 |2016年第1期|290-296|共7页
  • 作者

    Bu Tongle; Wen Min; Zou Haiyuan; Wu Junqing; Zhou Peng; Li Wangnan; Ku Zhiliang; Peng Yong; Li Qi; Huang Fuzhi; Cheng Yi-Bing; Zhong Jie;

  • 作者单位

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Hubei Univ Arts & Sci, Hubei Key Lab Low Dimens Optoelect Mat & Devices, Xiangyang 441053, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China|Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Humidity controlled sol-gel; TiO2; Zr-doping; Perovskite solar cell;

    机译：调湿溶胶-凝胶;TiO2;Zr掺杂;钙钛矿型太阳能电池;

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