scholarly journals Enhanced Light Absorption by Facile Patterning of Nano-Grating on Mesoporous TiO2 Photoelectrode for Cesium Lead Halide Perovskite Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1233
Author(s):  
Kang-Pil Kim ◽  
Wook Hyun Kim ◽  
Soo Min Kwon ◽  
Jun Yong Kim ◽  
Yun Seon Do ◽  
...  

CsPbIBr2, a cesium-based all-inorganic halide perovskite (CsPe), is a very promising alternative material to mainstream organic–inorganic hybrid halide perovskite (HPe) materials owing to its exceptional moisture stability, thermal stability, and light stability. However, because of the wide band gap (2.05 eV) of CsPbIBr2, it has a low power conversion efficiency (PCE), which hinders its application in highly efficient solar cells. In this study, a facile nanoimprinted one-dimensional grating nanopattern (1D GNP) formation on mesoporous TiO2 (mp-TiO2) photoelectrodes was introduced to improve the effective light utilization and enhance the performance of CsPbIBr2 perovskite solar cells (PSCs). The 1D GNP structure on the mp-TiO2 layer increases the light absorption efficiency by diffracting the unabsorbed light into the active mp-TiO2 and CsPbIBr2 layers as well as increasing the charge separation and collection due to the extended interfacial contact area between the mp-TiO2 and CsPbIBr2 layers. Consequently, both the current density (JSC) and the fill factor (FF) of the fabricated cells improved, leading to over a 20% enhancement in the solar cell’s PCE. Thus, this periodic grating structure, fabricated by simple nanoimprinting, could play an important role in the large-scale production of highly efficient and cost-effective Cs-based PSCs.

RSC Advances ◽  
2017 ◽  
Vol 7 (14) ◽  
pp. 8295-8302 ◽  
Author(s):  
Dong Liu ◽  
Shengqiang Ren ◽  
Xiao Ma ◽  
Cai Liu ◽  
Lili Wu ◽  
...  

We introduce a Cd2SnO4 film for constructing a perovskite device with a novel structure. The Cd2SnO4 film has higher optical transmission in the visible region than an FTO substrate, and an average PCE of 15.58% under AM 1.5 irradiation.


2020 ◽  
Author(s):  
Sungho Woo ◽  
Kang-Pil Kim ◽  
Soo Min Kwon ◽  
Wook Hyun Kim

Abstract CsPbIBr2, a type of cesium based all-inorganic halide perovskite (CsPe) composition, has been proposed as an alternative perovskite material against the mainstream organic–inorganic hybrid halide perovskite (HPe) materials owing to its exceptional humidity, thermal, temperature, and light stability. However, the low power conversion efficiency (PCE) due to its wide bandgap (2.05 eV) is an obstacle for its application in developing highly efficient solar cells. In this study, facile nanoimprinted one-dimensional grating nanopattern (1D GNP) formation on mesoporous TiO2 (mp-TiO2) photoelectrode has been introduced to improve the effective light utilization for enhancing the performance of CsPbIBr2 perovskite solar cells (PSCs). The 1D GNP structure on mp-TiO2 layer can not only increase the light absorption efficiency by diffracting the unabsorbed light into the mp-TiO2 and CsPbIBr2 active layer, but can also increase the charge separation and collection due to the enlarged interfacial contact area between the mp-TiO2 and CsPbIBr2 layers. Consequently, both current density (JSC) and fill factor (FF) of the fabricated cells were improved leading to over 20% improvement in their PCE. Thus, we conclude that this periodic grating structure, fabricated by simple solvent-assisted nanoimprinting, can play an important role in the realization of high-efficiency and low-cost Cs-based PSCs.


2019 ◽  
Vol 7 (14) ◽  
pp. 8078-8084 ◽  
Author(s):  
Yulei Wu ◽  
Xiaodong Li ◽  
Sheng Fu ◽  
Li Wan ◽  
Junfeng Fang

Highly efficient and stable mixed halide perovskite (MAPbI3–xClx) solar cells are fabricated with the incorporation of chloroformamidinium chloride (Cl-FACl).


2016 ◽  
Vol 4 (18) ◽  
pp. 6693-6713 ◽  
Author(s):  
Luis K. Ono ◽  
Matthew R. Leyden ◽  
Shenghao Wang ◽  
Yabing Qi

Vapor based methods provide a promising alternative way to fabricate organometal halide perovskite solar cells.


2019 ◽  
Vol 7 (2) ◽  
pp. 679-686 ◽  
Author(s):  
Mohammad Mahdi Tavakoli ◽  
Rouhollah Tavakoli ◽  
Pankaj Yadav ◽  
Jing Kong

Interface engineering in organometal halide perovskite solar cells (PSCs) has been an efficient tool to boost the performance and stability of photovoltaic (PV) devices.


2019 ◽  
Vol 7 (2) ◽  
pp. 371-379 ◽  
Author(s):  
Diwen Liu ◽  
Qiaohong Li ◽  
Jinyu Hu ◽  
Huijuan Jing ◽  
Kechen Wu

Hybrid organic–inorganic halide perovskite solar cells have recently attracted much attention because of their highly efficient photovoltaic performance.


2016 ◽  
Vol 9 (1) ◽  
pp. 12-30 ◽  
Author(s):  
Hobeom Kim ◽  
Kyung-Geun Lim ◽  
Tae-Woo Lee

This review article gives an overview of progress in planar heterojunction perovskite solar cells and the roles of interfacial layers in the device, and suggests a practical strategy to fabricate highly efficient and flexible planar heterojunction perovskite solar cells.


2020 ◽  
Vol 2 (1) ◽  
pp. 049-049

Aim & Scope: Metal halide perovskitehave been regarded as promising classes of materials for photovoltaics and optoelectronic devices, owing to the unique characteristics, such as long charge carrier diffusion lengths, precise tunable bandgaps, high light absorption coefficients, and high defect tolerance. Research on perovskite in the fields including photovoltaics, light-emitting diodes, lasers, X-ray imaging, and photodetectors has been gaining increasingly interest over the past years. Up to now, the efficiency of perovskite solar cells has grown from 3.8% in single-junction solar cells in 2009 to more than 25%, catching up the efficiency level of commercial silicon cells. Up to now, the key issues of perovskite photovoltaics and optoelectronic devices have become the stability, performance and large-scale production. This requires optimization of the film morphology, interface, device structure and the fabrication process. A lot work has been done on this issue and has made remarkable progress. We kindly invite you to submit a manuscript(s) for this Special Issue. Full papers, communications, and reviews are all welcome.


2019 ◽  
Vol 11 (34) ◽  
pp. 30838-30845 ◽  
Author(s):  
Azam Khorasani ◽  
Maziar Marandi ◽  
Rouhollah Khosroshahi ◽  
Mahdi Malekshahi Byranvand ◽  
Mehdi dehghani ◽  
...  

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