hole transport layer
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2022 ◽  
Vol 128 (2) ◽  
Mpilo W. Dlamini ◽  
Xolani G. Mbuyise ◽  
Genene T. Mola

2022 ◽  
Bo-Rong Jheng ◽  
Pei-Ting Chiu ◽  
Sheng-Hsiung Yang ◽  
Yung-Liang Tong

Abstract Inorganic metal oxides with the merits of high carrier transport capability, low cost and superior chemical stability have largely served as the hole transport layer (HTL) in perovskite solar cells (PSCs) in recent years. Among them, ternary metal oxides gradually attract attention because of the wide tenability of the two inequivalent cations in the lattice sites that offer interesting physicochemical perperties. In this work, ZnCo2O4 nanoparticles (NPs) were prepared by a chemical precipitation method and served as the HTL in inverted PSCs. The device based on the ZnCo2O4 NPs HTL showed better efficiency of 12.31% and negligible hysteresis compared with the one using PEDOT:PSS film as the HTL. Moreover, the device sustained 85% of its initial efficiency after 240 hours storage under a halogen lamps matrix exposure with an illumination intensity of 1000 W/m2, providing a powerful strategy to design long-term stable PSCs for future production.

Jules Bertrandie ◽  
Anirudh Sharma ◽  
Nicola Gasparini ◽  
Diego Rosas Villalva ◽  
Sri Harish K. Paleti ◽  

2022 ◽  
Vol 17 (1) ◽  
Ruonan Wang ◽  
Weikang Yu ◽  
Cheng Sun ◽  
Kashi Chiranjeevulu ◽  
Shuguang Deng ◽  

AbstractA dopant-free hole transport layer with high mobility and a low-temperature process is desired for optoelectronic devices. Here, we study a metal–organic framework material with high hole mobility and strong hole extraction capability as an ideal hole transport layer for perovskite solar cells. By utilizing lifting-up method, the thickness controllable floating film of Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 at the gas–liquid interface is transferred onto ITO-coated glass substrate. The Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 film demonstrates high compactness and uniformity. The root-mean-square roughness of the film is 5.5 nm. The ultraviolet photoelectron spectroscopy and the steady-state photoluminescence spectra exhibit the Ni3(HITP)2 film can effectively transfer holes from perovskite film to anode. The perovskite solar cells based on Ni3(HITP)2 as a dopant-free hole transport layer achieve a champion power conversion efficiency of 10.3%. This work broadens the application of metal–organic frameworks in the field of perovskite solar cells. Graphical Abstract

Yiming Chen ◽  
Shenghan Wu ◽  
Xiaohui Li ◽  
Meiyue Liu ◽  
Zeng Chen ◽  

Carbon-based hole-transport-layer free perovskite solar cells (C-PSCs) have attracted much attention due to their low cost, simple preparation process and high stability. However, the efficiency of C-PSCs is far behind...

2022 ◽  
Jiaxing Song ◽  
Xinxing Yin ◽  
Lin Hu ◽  
zhen Su ◽  
Yingzhi Jin ◽  

The Au nanochains with coupled plasmonic nanostructure were first introduced into PEDOT:PSS used as hole transport layer to fabricate mixed tin-lead PSCs. The improved electrical properties and the promotion of...

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