Hexagonal Lead-Free Cs2AgBiI6 Perovskite Nanocrystals: A Promising Material for Solar Cell Application
ACS APPLIED ENERGY MATERIALS(2023)
摘要
Lead halide perovskite (LHP) nanocrystals (NCs) have extensive applications in optoelectronics. However, their high toxicity and low stability inhibit their commercialization. Herein, lead-free Cs2AgBiI6 NCs with a hexagonal phase are synthesized using a hot-injection process, which exhibit a band gap of 2.29 eV, a high absorption coefficient (similar to 2.8 x 105 cm-1), and a symmetric and narrow photoluminescence peak (full width at half-maximum = 10 nm). In addition, the hexagonal Cs2AgBiI6 NC films exhibit high resistance to heat, humidity, and illumination in air. Solar cells based on hexagonal Cs2AgBiI6 NCs are fabricated for the first time, achieving a power conversion efficiency (PCE) of 0.076%, which confirms its promising potential for photovoltaic applications.
更多查看译文
关键词
perovskite nanocrystals,lead-free
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要