Cation exchange synthesis of AgBiS_2 quantum dots for highly efficient solar cells

Alina Senina,Anatol Prudnikau, Angelika Wrzesińska-Lashkova,Yana Vaynzof,Fabian Paulus

arxiv(2024)

引用 0|浏览1
暂无评分
摘要
Silver bismuth sulfide (AgBiS_2) nanocrystals have emerged as a promising eco-friendly, low-cost solar cell absorber material. Their direct synthesis often relies on the hot-injection method, requiring the application of high temperatures and vacuum for prolonged times. Here, we demonstrate an alternative synthetic approach via a cation exchange reaction. In the first-step, bis(stearoyl)sulfide is used as an air-stable sulfur precursor for the synthesis of small, monodisperse Ag2S nanocrystals at room-temperature. In a second step, bismuth cations are incorporated into the nanocrystal lattice to form ternary AgBiS_2 nanocrystals, without altering their size and shape. When implemented into photovoltaic devices, AgBiS_2 nanocrystals obtained by cation exchange reach power conversion efficiencies of up to 7.35 demonstrating the efficacy of the new synthetic approach for the formation of high-quality, ternary semiconducting nanocrystals.
更多
查看译文
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