scholarly journals A Compact and Smooth CH3NH3PbI3 Film: Investigation of Solvent Sorts and Concentrations of CH3NH3I towards Highly Efficient Perovskite Solar Cells

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 897 ◽  
Author(s):  
Liang Chen ◽  
Hao Zhang ◽  
Jiyuan Zhang ◽  
Yong Zhou
Keyword(s):  
Solar Cells ◽  
Alkyl Chain ◽  
High Surface ◽  
Solvent Molecule ◽  
Perovskite Solar Cells ◽  
Butyl Alcohol ◽  
Amyl Alcohol ◽  
Rapid Generation ◽  
Long Alkyl Chain

Four solvents (isopropanol (IPA), n-butyl alcohol (NBA), n-amyl alcohol (NAA), and n-hexyl alcohol (NHA)) were investigated to prepare CH3NH3I (methylammonium iodide, MAI) solutions to transform PbI2 film into CH3NH3PbI3 (MAPbI3) film. It was found that the morphology of the perovskite MAPbI3 film was not only affected by the chain of the solvent molecule, but also by the concentration of MAI. The use of solvents with a long alkyl chain (NAA and NHA) allowed the MAPbI3 to grow via an in situ transformation step, which easily made the perovskite films compact, but with a high surface roughness due to the growth of unexpected nanorods/nanoplates. The solvent with a short alkyl chain (IPA) led to the dissolution−crystallization growth mechanism, resulting in rapid generation of perovskite films with a number of pinholes. A high-quality (compact, smooth, pinhole-free) perovskite film was obtained with NBA and an optimized MAI concentration of 8 mg/mL. The corresponding perovskite solar cells achieved a maximum power conversion efficiency (PCE) of 16.66% and average PCE of 14.76% (for 40 cells).

Efficient and Stable Wide Bandgap Perovskite Solar Cells through Surface Passivation with Long Alkyl Chain Organic Cations

2021 ◽  
Author(s):  
The Duong ◽  
Huyen Pham ◽  
Yanting Yin ◽  
Jun Peng ◽  
Md Arafat Mahmud ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Passivation ◽  
Alkyl Chain ◽  
Perovskite Solar Cells ◽  
Wide Bandgap ◽  
Organic Cations ◽  
Defect Passivation ◽  
Key Factor ◽  
Carrier Traps ◽  
Long Alkyl Chain

Defects on perovskite surfaces acting as charge-carrier-traps are a key factor limiting the performance of perovskite solar cells (PSCs). Here we studied the defect passivation effect of three bromide-containing alkylammonium...

scholarly journals Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques

2021 ◽  
pp. 2248-2255
Author(s):  
Agustín Bou ◽  
Haralds A̅boliņš ◽  
Arjun Ashoka ◽  
Héctor Cruanyes ◽  
Antonio Guerrero ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Carrier Diffusion ◽  
Diffusion Parameters ◽  
Charge Carrier Diffusion

In Situ TEM Analysis of Organic–Inorganic Metal-Halide Perovskite Solar Cells under Electrical Bias

Nano Letters ◽  
2016 ◽  
Vol 16 (11) ◽  
pp. 7013-7018 ◽  
Author(s):  
Quentin Jeangros ◽  
Martial Duchamp ◽  
Jérémie Werner ◽  
Maximilian Kruth ◽  
Rafal E. Dunin-Borkowski ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
In Situ Tem ◽  
Tem Analysis ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Electrical Bias

Surface Reconstruction and In Situ Formation of 2D Layer for Efficient and Stable 2D/3D Perovskite Solar Cells

Small Methods ◽  
2021 ◽  
pp. 2101000
Author(s):  
Chunyan Deng ◽  
Jihuai Wu ◽  
Yitian Du ◽  
Qi Chen ◽  
Zeyu Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Reconstruction ◽  
Perovskite Solar Cells ◽  
In Situ Formation

In Situ Passivation on Rear Perovskite Interface for Efficient and Stable Perovskite Solar Cells

2020 ◽  
Vol 12 (6) ◽  
pp. 7690-7700 ◽  
Author(s):  
Gaoxiang Wang ◽  
Lipeng Wang ◽  
Jianhang Qiu ◽  
Zheng Yan ◽  
Changji Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells

Tailoring In Situ Healing and Stabilizing Post-Treatment Agent for High-Performance Inverted CsPbI3 Perovskite Solar Cells with Efficiency of 16.67%

2020 ◽  
Vol 5 (10) ◽  
pp. 3314-3321 ◽  
Author(s):  
Sheng Fu ◽  
Li Wan ◽  
Wenxiao Zhang ◽  
Xiaodong Li ◽  
Weijie Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Post Treatment ◽  
Treatment Agent

An in situ cross-linked 1D/3D perovskite heterostructure improves the stability of hybrid perovskite solar cells for over 3000 h operation

2020 ◽  
Vol 13 (11) ◽  
pp. 4344-4352
Author(s):  
Ning Yang ◽  
Cheng Zhu ◽  
Yihua Chen ◽  
Huachao Zai ◽  
Chenyue Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Operational Stability ◽  
Hybrid Perovskite ◽  
The Stability

An in situ cross-linked 1D/3D perovskite heterostructure achieved a perovskite solar cell with a 21.19% PCE and operational stability over 3000 hours.

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