氟硅烷在钙钛矿太阳能电池中作用的研究
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- 英文论文题名：Hydrophobic coating over CH_3NH_3PbI_3 absorbing layer towards air stable perovskite solar cells
- 论文作者：熊浩 ; 李耀刚 ; 王宏志 ; 张青红
- 英文论文作者：Hao Xiong ; Yaogang Li ; Qinghong Zhang ; Hongzhi Wang ; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials ; College of Materials Science and Engineering ; Donghua University
- 年：2016
- 作者机构：东华大学材料学院纤维改性国家重点实验室;
- 论文关键词：疏水层 ; 钙钛矿太阳能电池 ; 稳定性 ; 氟硅烷
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十一分会：纳米材料与器件
- 语种：中文
- 分类号：TM914.4;TQ264.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十一分会 ; 纳米材料与器件
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：2
- 文件大小：176k
- 原文格式：D
- 会议级别：全国
摘要
氟硅烷作为一种超疏水材料,广泛地应用到纺织服饰的防污染,自清洁玻璃以及电子产品的表面涂层等。由于氟硅烷具有天然的疏水性能以及绝缘性能,因此我们将氟硅烷引入到钙钛矿太阳能电池中,在钙钛矿层表面接上一层氟硅烷链,这层氟硅烷不仅充当了隔绝水分子的作用,并且能够起到了空穴阻挡的作用。本文采用最简单的旋涂法将氟硅烷旋涂到钙钛矿层表面,氟硅烷的亲水端与钙钛矿表面接触,疏水性的碳氟长链一端远离钙钛矿层,形成了一层隔离层,起到了保护钙钛矿层的作用,并且由于氟硅烷的绝缘性,阻隔了空穴与电子的进一步复合,减小了钙钛矿太阳能电池的J-V曲线的滞后。我们进一步讨论了氟硅烷的浓度对钙钛矿电池的影响,以及钙钛矿太阳能电池在空气中的稳定性。研究证明浓度为2%氟硅烷修饰的钙钛矿太阳能电池能够在湿度大于50%的空气中效率维持11%左右超过300 h。
Lead halide perovskite solar cells with high efficiency have recently attracted tremendous attention. However,the poor stability of perovskite material has hindered its practical application. Here, we presented a hydrophobic agent, fluoroalkl silane, to modify both the light absorbing layer and hole transport layer. In presence of hydrophobic coating, we obtained a stable perovskite solar cell with less hysteresis in the air. The effect of fluoroalkl silane concentration on the stability was investigated, with 2.0 wt % fluoroalkl silane solution treatment, the efficiency of perovskite solar cells has achieved over 12.0 ± 0.4 %. Moreover, those perovskite solar cells exposed in the air with about 50 % relative humidity, the efficiency was kept of around 11 % for a duration of more than 500 h, while the efficiency of those in absence of hydrophobic coating was sharply decreased from about 11 % to 1 % in a duration of 250 h.
Lead halide perovskite solar cells with high efficiency have recently attracted tremendous attention. However,the poor stability of perovskite material has hindered its practical application. Here, we presented a hydrophobic agent, fluoroalkl silane, to modify both the light absorbing layer and hole transport layer. In presence of hydrophobic coating, we obtained a stable perovskite solar cell with less hysteresis in the air. The effect of fluoroalkl silane concentration on the stability was investigated, with 2.0 wt % fluoroalkl silane solution treatment, the efficiency of perovskite solar cells has achieved over 12.0 ± 0.4 %. Moreover, those perovskite solar cells exposed in the air with about 50 % relative humidity, the efficiency was kept of around 11 % for a duration of more than 500 h, while the efficiency of those in absence of hydrophobic coating was sharply decreased from about 11 % to 1 % in a duration of 250 h.
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