Achieving high efficiency in indoor perovskite solar cells (PSCs) poses several challenges:
Main Challenges
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Stability and Degradation:
- Indoor perovskite solar cells face issues related to stability, as they are prone to degradation from environmental factors like moisture, oxygen, and heat.
- Ensuring long-term stability under various indoor conditions is crucial for practical applications.
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Bandgap and Light Conditions:
- The optical bandgap of perovskites can limit the open-circuit voltage (\(V_{oc}\)) under indoor illumination, which typically involves low-intensity, low-energy light.
- Adjusting the bandgap to better match indoor light sources while maintaining efficiency is a significant challenge.
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Defects and Recombination:
- Intrinsic defects (both surface and bulk) in perovskites can lead to non-radiative charge recombination, reducing efficiency.
- Techniques to suppress these defects, such as solvent engineering, are essential for improving performance.
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Orientation and Light Intensity Variability:
- The performance of indoor PSCs can vary significantly depending on their orientation relative to the light source.
- Adapting designs to optimize energy harvesting under diverse lighting conditions is important.
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Power Density and Efficiency:
- Achieving high power density and efficiency under low-light conditions is difficult. While progress has been made, further improvements are needed for widespread use.
Addressing these challenges is key to unlocking the full potential of perovskite solar cells for indoor applications, especially in powering IoT devices.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-main-challenges-in-achieving-high-efficiency-in-indoor-perovskite-solar-cells/
