N-type metal-oxide electron transport layer for mesoscopic perovskite solar cells

Xiong, Yuli; Liu, Tongfa; Jiang, Xuan; Rong, Yaoguang; Han, Hongwei

doi:10.1007/s40843-016-5121-1

Cited by 6 publications

(3 citation statements)

References 77 publications

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“…The idea behind this phenomenon is the size of long alkyl chain, which can help the perovskites to form a 2D structure [15,19,[26][27][28]. However, the stability, which is a vital index for application, of all-inorganic halide perovskites is much better than hybrid [7,10,12,29,30]. And the effect of substitution of organic long chain with cesium ions on the QCE with thickness changing is not clear.…”

Section: Introductionmentioning

confidence: 99%

Quantum confinement effect of two-dimensional all-inorganic halide perovskites

Cai

et al. 2017

Sci. China Mater.

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Quantum confinement effect (QCE), an essential physical phenomenon of semiconductors when the size becomes comparable to the exciton Bohr radius, typically results in quite different physical properties of low-dimensional materials from their bulk counterparts and can be exploited to enhance the device performance in various optoelectronic applications. Here, taking CsPbBr 3 as an example, we reported QCE in all-inorganic halide perovskite in two-dimensional (2D) nanoplates. Blue shifts in optical absorption and photoluminescence spectra were found to be stronger in thinner nanoplates than that in thicker nanoplates, whose thickness lowered below~7 nm. The exciton binding energy results showed similar trend as that obtained for the optical absorption and photoluminescence. Meanwile, the function of integrated intensity and full width at half maximum and temperature also showed similar results, further supporting our conclusions. The results displayed the QCE in all-inorganic halide perovskite nanoplates and helped to design the all-inorganic halide perovskites with desired optical properties.

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Section: Introductionmentioning

confidence: 99%

Quantum confinement effect of two-dimensional all-inorganic halide perovskites

Cai

et al. 2017

Sci. China Mater.

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“…In planar structure each layer, including perovskite layer, are formed as dense films sequentially. In mesoscopic structure, perovskite layer is adsorbed on a mesoscopic structure called as scaffold layer 1,2 .Optimization of all layers, such as formation of pin hole free perovskite layer, large crystal grains, improving interface matching between p-i-n layers, is the main focus for planar PSCs. In case mesoscopic PSCs, independent from the chemical structure (TiO 2 , SiO 2 , Al 2 O 3 , NiO), scaffold layer limits the size of perovskite crystal.…”

Section: One-sentence Summarymentioning

confidence: 99%

A novel natural scaffold layer improving efficiency, stability and reproducibility of Perovskite solar cells

Yenel

Kuş

2023

Sci Rep

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In this study, our hypothesis was to demonstrate the usability of a natural clay structure as scaffold layer in perovskite solar cells (PSCs). Sepiolite, which is a natural and environmentally friendly clay structure, has a very high active surface area and can easily be dispersed in solvents. In addition we predicted that crystallization could easily occur on their surfaces due to their surface chemistry. In the study, we firstly used a natural clay as scaffold layer in PSCs. It is observed that, efficiency, reproducibility and stability of PSCs have been significantly improved. Improvements in efficiency have been observed to be between 30 and 50% depending on the type of perovskite solvent used. In addition, the surface chemistry of the sepiolite resulted in better crystallization as well as stability. Due to its high-water adsorption capability, sepiolite makes the perovskite crystal more stable by trapping the residual water molecules as well as penetrated water molecules from environment. Consequently, we demonstrated that, a natural, low-cost and environmentally friendly clay may be an alternative material which may contribute to the commercialization of PSCs.

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“…Titanium dioxide (TiO 2 ) is an ETL material in the most reported efficient PSCs for its proper forbidden bandwidth, good optical and chemical stability, nontoxicity, corrosion resistance, and simple manufacturing process ( Que et al, 2016 ). Both mesoscopic and dense TiO 2 films perform well in PSCs, and their properties can be improved by various modifications and synthesis methods ( Xiong Y. et al, 2016 ; Ullah et al, 2021 ).…”

Section: Commercial Materialsmentioning

confidence: 99%

Advances of Commercial and Biological Materials for Electron Transport Layers in Biological Applications

Yin

Chen

et al. 2022

Front. Bioeng. Biotechnol.

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Electron transport layer (ETL), one of the important layers for high-performing perovskite solar cells (PSCs), also has great potential in bioengineering applications. It could be used for biological sensors, biological imaging, and biomedical treatments with high resolution or efficiency. Seldom research focused on the development of biological material for ETL and their application in biological uses. This review will introduce commercial and biological materials used in ETL to help readers understand the working mechanism of ETL. And the ways to prepare ETL at low temperatures will also be introduced to improve the performance of ETL. Then this review summarizes the latest research on material doping, material modification, and bilayer ETL structures to improve the electronic transmission capacity of ETLs. Finally, the application of ETLs in bioengineering will be also shown to demonstrate that ETLs and their used material have a high potential for biological applications.

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N-type metal-oxide electron transport layer for mesoscopic perovskite solar cells

Cited by 6 publications

References 77 publications

Quantum confinement effect of two-dimensional all-inorganic halide perovskites

Quantum confinement effect of two-dimensional all-inorganic halide perovskites

A novel natural scaffold layer improving efficiency, stability and reproducibility of Perovskite solar cells

Advances of Commercial and Biological Materials for Electron Transport Layers in Biological Applications

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