Challenges in tin perovskite solar cells.

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells (PSCs) are a promising third-generation photovoltaic technology.
• Record efficiencies for lead-based PSCs approach theoretical limits, but lead toxicity poses commercialization challenges.
• Tin-based (Sn) perovskites are explored as a safer, lead-free alternative.

Purpose of the Study:

• To review the challenges hindering the performance of tin-based perovskite solar cells.
• To highlight successful strategies for overcoming these obstacles.
• To identify future trends for advancing tin perovskite photovoltaics.

Main Methods:

• Literature review of recent advancements in tin-based perovskite solar cells.
• Analysis of key challenges including materials, film formation, oxidation, and band alignment.
• Synthesis of successful approaches and future research directions.

Main Results:

• Identified four critical challenges: materials and solvents, film formation, Sn(II) oxidation, and energy band alignment.
• Summarized successful strategies to mitigate these issues, improving device performance.
• Highlighted progress in enhancing the stability and efficiency of Sn-based PSCs.

Conclusions:

• Tin-based perovskites are a viable, non-toxic alternative to lead-based solar cells.
• Addressing material stability, film quality, and electronic properties is crucial for efficiency.
• Continued research into Sn-based perovskites is essential for achieving benchmark photovoltaic performance.