Two different mechanisms of CH3NH3PbI3film formation in one-step deposition and its effect on photovoltaic properties of OPV-type perovskite solar cells

2015 ◽  
Vol 3 (47) ◽  
pp. 23964-23972 ◽  
Author(s):  
Seunghwan Bae ◽  
Seung Jin Han ◽  
Tae Joo Shin ◽  
Won Ho Jo
Keyword(s):  
Heat Treatment ◽  
Solar Cells ◽  
Spin Coating ◽  
Heat Treatment Temperature ◽  
Perovskite Solar Cells ◽  
Treatment Temperature ◽  
Post Heat Treatment ◽  
Photovoltaic Properties ◽  
One Step ◽  
Coating Time

Two different morphologies of perovskite, tree-like and flower-like morphologies, are developed depending upon the spin-coating time and post-heat treatment temperature.

Highly efficient CsPbIBr2 perovskite solar cells with efficiency over 9.8% fabricated using a preheating-assisted spin-coating method

2019 ◽  
Vol 7 (32) ◽  
pp. 19008-19016 ◽  
Author(s):  
Yuxiao Guo ◽  
Xingtian Yin ◽  
Jie Liu ◽  
Wenxiu Que
Keyword(s):  
Solar Cells ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Spin Coating Method ◽  
Highly Efficient ◽  
Coating Method ◽  
One Step

An efficient and facile one-step spin-coating method assisted by a preheating process was applied for the fabrication of high-quality CsPbIBr2 films.

Solution Processed Bi-Based Sensitized Solar Cell: Effects of Post Heat Treatment

2019 ◽  
Vol 19 (6) ◽  
pp. 3505-3510 ◽  
Author(s):  
Yik Chong Chai ◽  
Hieng Kiat Jun
Keyword(s):  
Heat Treatment ◽  
Quantum Dots ◽  
Solar Cell ◽  
Heat Treatment Temperature ◽  
Sintering Temperature ◽  
Gradual Increase ◽  
Treatment Temperature ◽  
Post Heat Treatment ◽  
Dipping Process ◽  
Sensitized Solar Cells

Nanosize semiconductors have been used as active sensitizers for the application of quantum dot-sensitized solar cells (QDSSC). “Green” sensitizers are introduced as an alternative for the toxic Cd and Pb based compounds. In this work, Bi2S3 quantum dots (QDs) were fabricated and used as sensitizers in QDSSC. QDs were grown on TiO2 electrode via solution dipping process. Although the performance of “green” QDSSC is not as high as that of CdS or CdSe based QDSSCs, its performance can be enhanced with post heat treatment. The effect is dependent on the heat treatment temperature profile where gradual increase of sintering temperature is preferred. The effects of post heat treatment on Bi2S3 sensitized TiO2 electrodes are investigated and discussed.

scholarly journals Efficient Ag-Doped Perovskite Solar Cells Fabricated in Ambient Air

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1521
Author(s):  
Jiabin Hao ◽  
Zeming Wang ◽  
Huiying Hao ◽  
Guanlei Wang ◽  
Hongcheng Gao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spin Coating ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Ambient Air ◽  
Nucleation Density ◽  
Perovskite Material ◽  
Coating Method ◽  
One Step ◽  
Improved Performance

So far, it is still a great challenge to prepare high efficiency organic–inorganic perovskite solar cells in ambient air. Specifically, moisture is easily combined with the perovskite material during the spin-coating process, which result in porous perovskite films with poor surface morphology. In this study, we investigated crystalline Ag-doped perovskite films by a one-step spin-coating method in air with 30–40% relative humidity (RH), in which ethyl acetate (EA) was used as antisolvent can absorb moisture in air to reduced nucleation density. More significantly, EA is a feasible and environmentally friendly solvent to replace highly toxic solvent. Moreover, 1.0% Ag-doped device shows a highest power conversion efficiency (PCE) of 14.36%. The improved performance is not only ascribed to the superior CH3NH3PbI3 film with high crystallinity but to the versatile tunability of energy band structure.

scholarly journals Gas-Supported High-Photoactivity TiO2Nanotubes

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Sheng Wang ◽  
Tao Wang ◽  
Yuanwei Ding ◽  
Youfeng Xu ◽  
Qiying Su ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Photocatalytic Activity ◽  
Hydrothermal Treatment ◽  
Heat Treatment Temperature ◽  
Hydrothermal Condition ◽  
Treatment Temperature ◽  
Post Heat Treatment ◽  
Tubular Morphology

By changing hydrothermal condition and post-heat-treatment temperature, silica-coatedTiO2nanotubes are obtained successfully. The effects of gas-supported process on tubular morphology, crystallinity, and photocatalytic activity are discussed. It is found that the sample prepared at hydrothermal treatment (180°C/9 h) and calcination (650°C/2 h) shows perfect open-ended tubular morphology and increased crystallinity. The photoactivity of the sample is proved to be 5 times higher than that ofTiO2nanoparticles.

Annealing-free perovskite films by instant crystallization for efficient solar cells

2016 ◽  
Vol 4 (22) ◽  
pp. 8548-8553 ◽  
Author(s):  
Maoshu Yin ◽  
Fengxian Xie ◽  
Han Chen ◽  
Xudong Yang ◽  
Fei Ye ◽  
...  
Keyword(s):  
Solar Cells ◽  
Ethyl Acetate ◽  
Thermal Annealing ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Spin Coating Method ◽  
Coating Method ◽  
One Step

Ethyl acetate (EA) is introduced in a one-step spin-coating method and can induce instant crystallization of perovskite films to create efficient thermal annealing-free perovskite solar cells.

scholarly journals Fabrication of planar heterojunction CsPbBr2I perovskite solar cells using ZnO as an electron transport layer and improved solar energy conversion efficiency

2018 ◽  
Vol 42 (17) ◽  
pp. 14104-14110 ◽  
Author(s):  
Muhammad Aamir ◽  
Tham Adhikari ◽  
Muhammad Sher ◽  
Neerish Revaprasadu ◽  
Waqas Khalid ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Energy Conversion Efficiency ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
One Step ◽  
Solar Energy Conversion Efficiency ◽  
Planar Heterojunction

Inorganic cesium lead bromoiodide based planar perovskite solar cells with ZnO electron transport layers are deposited using one step spin coating.

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