Efficient planar heterojunction perovskite solar cells with weak hysteresis fabricated via bar coating
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- 作者：Xuan Liua ; b ; Xinxin Xiaa ; b ; Qiuquan Caia ; b ; Feilong Caia ; b ; Liyan Yanga ; b ; Yu Yana ; b ; Tao Wanga ; b ; twang@whut.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Perovskite solar cells ; Bar-coating ; Anti-solvent ; Isopropanol ; Humidity
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：159
- 期：Complete
- 页码：412-417
- 全文大小：1091 K
文摘
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A scalable bar-coating method is employed to prepare perovskite solar cells with maximum PCE of 13% with weak hysteresis.
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Similar device efficiency can be achieved by bar-coating the perovskite in air under a relatively high humidity around 50%, eliminating a low humidity requirement.
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Anti-solvent plays an importance role in determining quality and morphology of perovskite;
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Bar-coating can fabricate perovskite films with large grains with long aspect ratio.
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The grain boundaries in perovskite films have high charge recombination and therefore high PL intensity.