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All-Inorganic Perovskite Solar Cells
Jia Liang1, Caixing Wang1, Yanrong Wang1
1Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210093, China.
Journal of the American Chemical Society
|December 15, 2016
Summary
Researchers developed stable, all-inorganic perovskite solar cells (PSCs) without organic components. These devices demonstrate excellent durability in humid air and extreme temperatures, paving the way for practical, low-cost solar energy applications.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) achieve high power conversion efficiencies (PCEs).
- Current PSCs often use organic-inorganic hybrid perovskites and organic additives in hole-transport materials (HTMs), leading to poor stability against moisture and heat.
- This limits the long-term viability and practical application of PSC technology.
Purpose of the Study:
- To fabricate stable, all-inorganic perovskite solar cells (PSCs).
- To eliminate labile and expensive organic components from PSCs.
- To assess the stability and performance of these novel PSCs under various environmental conditions.
Main Methods:
- Fabrication of all-inorganic PSCs using stable materials.
- Operation of the entire fabrication process in an ambient environment without humidity control.
- Testing of device stability under high humidity (90-95% RH at 25 °C) for over 3 months and extreme temperatures (100 °C and -22 °C).
Main Results:
- Successful fabrication of all-inorganic PSCs without organic components.
- Demonstrated exceptional stability: no performance degradation in humid air for over 3 months (2640 h) and tolerance to extreme temperatures.
- Achieved a highest PCE of 6.7% for the first-generation devices.
- Significantly reduced cost by eliminating expensive HTMs and noble-metal electrodes.
Conclusions:
- All-inorganic PSCs offer a promising pathway to overcome the stability limitations of traditional PSCs.
- The developed fabrication process is cost-effective and can be performed in ambient conditions.
- These stable PSCs hold potential for practical applications in harsh environments, advancing solar energy technology.
