Efficient p-i-n inorganic CsPbI3 perovskite solar cell deposited using layer-by-layer vacuum deposition
Efficient p-i-n inorganic CsPbI3 perovskite solar cell deposited using layer-by-layer vacuum deposition
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DOI：
10.1116/1.5029253
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发表时间：
2018-07-01
影响因子：
2.9
通讯作者：
Dalal, Vikram L.
中科院分区：
文献类型：
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作者：
Kottokkaran, Ranjith;Gaonkar, Harshavardhan A.;Dalal, Vikram L.
有机卤化物钙钛矿已经成为一种有前途的光伏材料，实现超过22%的功率转换效率。然而，差的热稳定性、环境稳定性和光稳定性仍然困扰着基于甲基铵的钙钛矿。用无机阳离子取代有机阳离子：铯（Cs）是制造热稳定钙钛矿太阳能电池的替代方法，其中没有有机分子热分解。在本文中，作者报告了使用逐层真空沉积技术沉积的CsPbI 3钙钛矿太阳能电池，然后在320摄氏度下进行热退火。通过控制CsI/PbI 2的摩尔比和衬底温度，获得了ITO/聚三芳胺/CsPbI 3/苯基-C61-丁酸甲酯/Al（p型-本征-n型）（p-i-n）器件结构，功率转换效率>10%。材料的带隙为1.74 eV，掺杂密度为2 × 10（15）/cm（3）。由AVS出版。
Organometallic halide perovskites have emerged as a promising photovoltaic material achieving more than 22% power conversion efficiency. However, poor thermal, environmental, and photostability still plague methyl ammonium based perovskites. Replacing the organic cation with an inorganic cation: Cesium (Cs) is an alternative approach for making thermally stable perovskite solar cells where there is no organic molecule to decompose thermally. In this paper, the authors report on a CsPbI3 perovskite solar cell deposited using a layer-by-layer vacuum deposition technique followed by thermal annealing at 320 degrees C. A (p type-intrinsic-n type) (p-i-n) device architecture of ITO/polytriaryl amine/CsPbI3/phenyl-C61-butyric acid methyl ester/Al with power conversion efficiency of >10% was achieved by carefully controlling the molar ratios of CsI to PbI2 and the substrate temperature during deposition. The bandgap of the material was 1.74 eV, and the doping density was 2 x 10(15)/cm(3). Published by the AVS.