首页|自组装单分子层界面修饰NiOx制备高效稳定的反式钙钛矿太阳能电池

自组装单分子层界面修饰NiOx制备高效稳定的反式钙钛矿太阳能电池

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氧化镍(NiOx)由于其具有高的透过率、可低温制备以及杰出的稳定性能,使得其作为反式钙钛矿太阳能电池的空穴传输材料受到了广泛关注.然而,NiOx与钙钛矿之间不匹配的能级结构以及二者之间在界面处可能存在的氧化还原反应严重地限制了 NiOx基反式钙钛矿太阳能电池的发展.基于此,本文引入了一种p型的自组装单分子层来修饰NiOx与钙钛矿之间的界面同时阻挡二者之间不良的氧化还原反应.自组装单分子层分子中含有磷酸基团,其可以牢固地锚定在NiOx表面上同时钝化表面处的缺陷.此外,自组装单分子层的引入还可以调节NiOx的能级结构,减少因能带不匹配而引起的能量损失,进而促进空穴载流子从钙钛矿层向NiOx层的传输.最终,器件的能量转换效率及稳定性均得到了显著的提升.
Interfacial Modification of NiOx by Self-assembled Monolayer for Efficient and Stable Inverted Perovskite Solar Cells
NiOx as a hole transport material for inverted perovskite solar cells has received great atten-tion owing to its high transparency,low fabrica-tion temperature,and superior stability.How-ever,the mismatched energy levels and possi-ble redox reactions at the NiOx/perovskite in-terface severely limit the performance of NiOr based inverted perovskite solar cells.Herein,we introduce a p-type self-assembled monolayer between NiOx and perovskite layers to modify the interface and block the undesirable redox reaction between perovskite and NiOx.The self-assembled monolayer molecules all contain phosphoric acid function groups,which can be an-chored onto the NiOx surface and passivate the surface defect.Moreover,the introduction of self-assembled monolayers can regulate the energy level structure of NiOx,reduce the interfa-cial band energy offset,and hence promote the hole transport from perovskite to NiOx layer.Consequently,the device performance is significantly enhanced in terms of both power con-version efficiency and stability.

Perovskite solar cellNiOxSelf-assembled monolayerInterfacial engineeringStability

于欣、王艳东、李柳飞、张善涛、高爽、梁茂、张文华、杨上峰

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中国科学技术大学材料科学与工程系,合肥微尺度物质科学国家研究中心,中国科学院能量转换材料重点实验室,先进光子科学技术安徽省实验室,合肥 230026

云南大学材料与能源学院,云南省碳中和绿色低碳技术重点实验室,昆明 650000

天津理工大学应用化学系,天津市有机太阳能电池与光化学转换重点实验室,天津 300384

钙钛矿太阳能电池 氧化镍 自组装单分子层 界面工程 稳定性

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of China

51925206U19322142017YFA0402800

2024

10.1063/1674-0068/cjcp2303026

化学物理学报(英文版)
中国物理学会

化学物理学报(英文版)

CSTPCDEI
影响因子：0.162
ISSN：1674-0068
年,卷(期)：2024.37(4)