首页> 外文期刊>Journal of Colloid and Interface Science >Additive-assisted one-step formed perovskite/hole conducting materials graded heterojunction for efficient perovskite solar cells
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Additive-assisted one-step formed perovskite/hole conducting materials graded heterojunction for efficient perovskite solar cells

机译:添加剂辅助的一步形成钙钛矿/孔导电材料渐变异质结以高效的钙钛矿太阳能电池

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摘要

Solar cells based on organometallic perovskite materials have been intensively investigated as the most promising next-generation photovoltaic technology. The quality of perovskite film and the heterojunction between perovskite and charge transporting materials dominate the performance of resulting devices. Herein, we report a facile additive-assisted method to form perovskite/2, 2', 7, 7'-tetrakis (N, N-di-p-methoxyphenylamine)-9, 90-spirobifluorene (spiro-OMeTAD) graded heterojunction by one step instead of spin-coating two layers separately. The additives concentration in anti-solution is optimized to form a mixed layer where spiro-OMeTAD is dispersive in upper perovskite films with a vertical gradient, and a capping layer with appropriate thickness. The incorporation of spiro-OMeTAD in anti-solution tremendously improve the crystallinity of perovskite films while the graded heterojunction and the derived capping layer contribute to reduced interfacial losses. Moreover, poly(methyl methacrylate) as the second additive in anti-solution further passivates defects in perovskite films. As a result, we realize perovskite solar cells with a power conversion efficiency of 15.72% based on perovskite-graded heterojunction, which is far beyond the control devices. This study demonstrates an effective extension of heterojunction engineering to fabricate efficient perovskite solar cells using simplified procedures. (C) 2018 Elsevier Inc. All rights reserved.
机译:基于有机金属钙钛矿材料的太阳能电池被密集地调查了最有前途的下一代光伏技术。 Perovskite薄膜的质量和钙钛矿和电荷运输材料之间的异质结占据了所得装置的性能。在此,我们报告了钙钛矿/ 2,2',7,7'-四(N,N-DI-P-甲氧基甲氧基胺)-9,90-螺氟烯(螺洲)渐变异质结的容易添加剂辅助方法一步而不是单独旋转两层。抗溶液中的添加剂浓度优化以形成混合层,其中螺欧比达在具有垂直梯度的上钙钛矿膜中分散,以及具有适当厚度的封盖层。在抗溶液中掺入螺旋-MOTAD在钙钛矿薄膜的结晶性上,同时渐变的异质结和衍生的覆盖层有助于降低界面损失。此外,作为抗溶液中的第二添加剂的聚(甲基丙烯酸甲酯)进一步钝化钙钛矿薄膜的缺陷。因此,我们基于Perovskite级异质结的功率转换效率实现了钙钛矿太阳能电池,远远超过控制装置。本研究表明,异质结工程的有效延伸,使用简化的程序制造高效的钙钛矿太阳能电池。 (c)2018 Elsevier Inc.保留所有权利。

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  • 作者单位

    Xi An Jiao Tong Univ Shaanxi Engn Res Ctr Adv Energy Mat &

    Devices Sch Elect &

    Informat Engn Int Ctr Dielect Res Elect Mat Res Lab Key Lab Minist Educ Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Shaanxi Engn Res Ctr Adv Energy Mat &

    Devices Sch Elect &

    Informat Engn Int Ctr Dielect Res Elect Mat Res Lab Key Lab Minist Educ Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Shaanxi Engn Res Ctr Adv Energy Mat &

    Devices Sch Elect &

    Informat Engn Int Ctr Dielect Res Elect Mat Res Lab Key Lab Minist Educ Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Shaanxi Engn Res Ctr Adv Energy Mat &

    Devices Sch Elect &

    Informat Engn Int Ctr Dielect Res Elect Mat Res Lab Key Lab Minist Educ Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Shaanxi Engn Res Ctr Adv Energy Mat &

    Devices Sch Elect &

    Informat Engn Int Ctr Dielect Res Elect Mat Res Lab Key Lab Minist Educ Xian 710049 Shaanxi Peoples R China;

    Taishan Univ Sch Machinery &

    Architectural Engn Tai An 271021 Shandong Peoples R China;

    Xi An Jiao Tong Univ Shaanxi Engn Res Ctr Adv Energy Mat &

    Devices Sch Elect &

    Informat Engn Int Ctr Dielect Res Elect Mat Res Lab Key Lab Minist Educ Xian 710049 Shaanxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 表面现象的物理化学;胶体化学(分散体系的物理化学);
  • 关键词

    Perovskite solar cell; Graded heterojunction; Interfacial engineering; Solvent engineering;

    机译:Perovskite太阳能电池;分级异质结;界面工程;溶剂工程;

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