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Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
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Low-temperature solution-processed vanadium oxide as hole transport layer for efficient and stable perovskite solar
Qiang Guo1, Chenyun Wang, Jinyan Li
1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China. tanzhanao@ncepu.edu.cn.
Physical Chemistry Chemical Physics : PCCP
|August 15, 2018
Summary
We developed a stable, low-temperature processed vanadium oxide (VOx) hole transport layer (HTL) for perovskite solar cells (PSCs). This VOx HTL enhances device efficiency and stability, paving the way for commercialization.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Organic-inorganic hybrid perovskite solar cells (PSCs) show promise for renewable energy.
- Improving PSC power conversion efficiency (PCE) is crucial.
- Limited stability of hole transport materials (HTMs) hinders PSC commercialization.
Purpose of the Study:
- To develop a novel, stable hole transport layer (HTL) for planar heterojunction PSCs.
- To investigate the performance of vanadium oxide (VOx) as an HTL.
- To enhance the efficiency and stability of PSCs.
Main Methods:
- Fabrication of an alcohol-solution-based, low-temperature processed VOx HTL.
- Characterization of VOx film crystallinity and morphology using SEM and XRD.
- Fabrication and testing of planar heterojunction PSCs with VOx HTL.
Main Results:
- Amorphous VOx films enabled good crystallinity and morphology of CH3NH3PbI3.
- VOx HTL demonstrated suitable energy level alignment with CH3NH3PbI3 for efficient charge transfer.
- VOx-HTL-based PSCs achieved a PCE of 14.5% with improved stability compared to PEDOT:PSS-based devices.
Conclusions:
- Low-temperature processed VOx films are effective HTLs for efficient and stable PSCs.
- VOx offers a promising alternative to conventional HTMs in PSCs.
- This work contributes to overcoming stability limitations in PSC commercialization.
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