Enhanced efficiency in perovskite solar cells by eliminating the electron contact barrier between the metal electrode and electron transport layer

Poly(vinylpyrrolidone) (PVP)-doped SnO2 was first used as an efficient electron transport layer for perovskite solar cells with increased efficiency and improved stability.

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Enhancing Performance of Perovskite Solar Cells by TiCl4 Treatment on the Surface Roughness of the Titanium Dioxide Layer

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2021.19239 ◽

2021 ◽

Vol 21 (7) ◽

pp. 3806-3812

Author(s):

Truyen Hai Dang ◽

Sangmo Kim ◽

Maro Kim ◽

Chung Wung Bark

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Perovskite Solar Cells ◽

Metal Electrode ◽

Hole Transport ◽

Transport Layer ◽

Electron Transport Layer ◽

Hole Transport Layer ◽

Perovskite Layer ◽

And Performance

Perovskite solar cells have been attracting extensive attention because of their superior photovoltaic performances and lower costs as compared to those of prevailing photovoltaic technologies. There are four main interfaces in perovskite solar cells: flourine-doped tin oxide/electron transport layer, electron transport layer/perovskite layer, perovskite layer/hole transport layer, and hole transport layer/metal electrode. Among them, the interface between the perovskite layer (general formula RPbX3) and electron transport layer significantly affects the power conversion efficiency. In this study, a layer of TiO2, which is the most popular metal oxides used for perovskite solar cells applications, was deposited as the electron transport layer. To enhance the perovskite solar cells performance, surface treatment was performed with TiCl4 (80 mM). To investigate the effect of TiCl4 treatment, ultraviolet-visible spectroscopy was performed on the perovskite film. Atomic force microscopy, X-ray diffraction, scanning electron microscopy and performance of perovskite solar cells have been also evaluated in this paper. The results indicated that the TiCl4 treatment significantly improved the perovskite solar cells performance.

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A TiO2nanotube network electron transport layer for high efficiency perovskite solar cells

Physical Chemistry Chemical Physics ◽

10.1039/c6cp07733a ◽

2017 ◽

Vol 19 (7) ◽

pp. 4956-4961 ◽

Cited By ~ 22

Author(s):

Xianfeng Gao ◽

Jianyang Li ◽

Sam Gollon ◽

Ming Qiu ◽

Dongsheng Guan ◽

...

Keyword(s):

Solar Cells ◽

Electron Transport ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Transport Layer ◽

Electron Transport Layer ◽

Improved Performance

A TiO2nanotube network ETL is developed for perovskite solar cells, presenting significantly improved performance over a conventional TiO2mesoporous scaffold layer.

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Ultrathin and compact electron transport layer made from novel water-dispersed Fe3O4 nanoparticles to accomplish UV-stable perovskite solar cells

Materials Advances ◽

10.1039/d0ma01027h ◽

2021 ◽

Author(s):

Song Fang ◽

Bo Chen ◽

Bangkai Gu ◽

Linxing Meng ◽

Hao Lu ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Electron Transport ◽

Perovskite Solar Cells ◽

Perovskite Solar Cell ◽

Transport Layer ◽

Electron Transport Layer ◽

Perovskite Material ◽

Main Factors ◽

Induced Decomposition

UV induced decomposition of perovskite material is one of main factors to severely destroy perovskite solar cells for instability. Here we report a UV stable perovskite solar cell with a...

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Photo-assisted Cl doping of SnO2 electron transport layer for hysteresis-less perovskite solar cells with enhanced efficiency

Rare Metals ◽

10.1007/s12598-021-01812-2 ◽

2021 ◽

Author(s):

Jin-Bo Wu ◽

Chao Zhen ◽

Gang Liu

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Perovskite Solar Cells ◽

Transport Layer ◽

Electron Transport Layer

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The Influence of the Thickness of Compact TiO2 Electron Transport Layer on the Performance of Planar CH3NH3PbI3 Perovskite Solar Cells

Materials ◽

10.3390/ma14123295 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3295

Author(s):

Andrzej Sławek ◽

Zbigniew Starowicz ◽

Marek Lipiński

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Short Circuit ◽

Photovoltaic Performance ◽

Perovskite Solar Cells ◽

Precursor Solution ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Transport Layer ◽

Electron Transport Layer

In recent years, lead halide perovskites have attracted considerable attention from the scientific community due to their exceptional properties and fast-growing enhancement for solar energy harvesting efficiency. One of the fundamental aspects of the architecture of perovskite-based solar cells (PSCs) is the electron transport layer (ETL), which also acts as a barrier for holes. In this work, the influence of compact TiO2 ETL on the performance of planar heterojunction solar cells based on CH3NH3PbI3 perovskite was investigated. ETLs were deposited on fluorine-doped tin oxide (FTO) substrates from a titanium diisopropoxide bis(acetylacetonate) precursor solution using the spin-coating method with changing precursor concentration and centrifugation speed. It was found that the thickness and continuity of ETLs, investigated between 0 and 124 nm, strongly affect the photovoltaic performance of PSCs, in particular short-circuit current density (JSC). Optical and topographic properties of the compact TiO2 layers were investigated as well.

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Electron-transport-layer-free two-dimensional perovskite solar cells based on a flexible poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) cathode

Sustainable Energy & Fuels ◽

10.1039/d1se00303h ◽

2021 ◽

Author(s):

Zhihai Liu ◽

Lei Wang ◽

Chongyang Xu ◽

Xiaoyin Xie

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Power Conversion ◽

Perovskite Solar Cells ◽

Transport Layer ◽

Electron Transport Layer ◽

Two Dimensional ◽

High Power Conversion Efficiency ◽

Long Term Stability

Recently, Ruddlesden–Popper two-dimensional (2D) perovskite solar cells (PSCs) have been intensively studied, owing to their high power conversion efficiency (PCE) and excellent long-term stability. In this work, we fabricated electron-transport-layer-free...

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Magnesium doped TiO2 as an efficient electron transport layer in perovskite solar cells

Case Studies in Thermal Engineering ◽

10.1016/j.csite.2021.101101 ◽

2021 ◽

pp. 101101

Author(s):

Zafar Arshad ◽

Asif Hussain Khoja ◽

Sehar Shakir ◽

Asif Afzal ◽

M.A. Mujtaba ◽

...

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Perovskite Solar Cells ◽

Transport Layer ◽

Electron Transport Layer ◽

Doped Tio2

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Low-temperature-processed metal oxide electron transport layers for efficient planar perovskite solar cells

Rare Metals ◽

10.1007/s12598-020-01676-y ◽

2021 ◽

Author(s):

Jia-Xing Song ◽

Xin-Xing Yin ◽

Zai-Fang Li ◽

Yao-Wen Li

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Low Temperature ◽

Metal Oxide ◽

Low Cost ◽

Perovskite Solar Cells ◽

Transport Layer ◽

Electron Transport Layer ◽

Future Research ◽

Low Temperature Preparation

Abstract As a promising photovoltaic technology, perovskite solar cells (pero-SCs) have developed rapidly over the past few years and the highest power conversion efficiency is beyond 25%. Nowadays, the planar structure is universally popular in pero-SCs due to the simple processing technology and low-temperature preparation. Electron transport layer (ETL) is verified to play a vital role in the device performance of planar pero-SCs. Particularly, the metal oxide (MO) ETL with low-cost, superb versatility, and excellent optoelectronic properties has been widely studied. This review mainly focuses on recent developments in the use of low-temperature-processed MO ETLs for planar pero-SCs. The optical and electronic properties of widely used MO materials of TiO2, ZnO, and SnO2, as well as the optimizations of these MO ETLs are briefly introduced. The commonly used methods for depositing MO ETLs are also discussed. Then, the applications of different MO ETLs on pero-SCs are reviewed. Finally, the challenge and future research of MO-based ETLs toward practical application of efficient planar pero-SCs are proposed. Graphical abstract

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