Recent Progress in Inorganic Hole Transport Materials for Efcient and Stable Perovskite Solar Cells

Recent Progress in Inorganic Hole Transport Materials for Efcient and Stable Perovskite Solar Cells

Organic–inorganic hybrid perovskite solar cells (PSCs) are considered as one of the most promising emerging photovoltaicswith outstanding performance. However, the commonly used organic hole transport materials (HTMs) suffer fromheat-, light-, and bias-induced degradation along with defect diffusion and hygroscopic properties. To resolve these issuesin conventional HTMs, inorganic materials with superior chemical stability, high carrier mobility, and low cost have beendeveloped, demonstrating improved stability under rigorous conditions such as high temperature and long-term illumination. Understanding the properties of alternative inorganic HTMs is of prominent importance to realize more stable and efficientPSCs. This review summarizes the recent progresses in inorganic HTMs adopted in various device architectures, with theirremarkable achievements in efficiency and long-term stability.

Organic–inorganic hybrid perovskite solar cells (PSCs) are considered as one of the most promising emerging photovoltaicswith outstanding performance. However, the commonly used organic hole transport materials (HTMs) suffer fromheat-, light-, and bias-induced degradation along with defect diffusion and hygroscopic properties. To resolve these issuesin conventional HTMs, inorganic materials with superior chemical stability, high carrier mobility, and low cost have beendeveloped, demonstrating improved stability under rigorous conditions such as high temperature and long-term illumination. Understanding the properties of alternative inorganic HTMs is of prominent importance to realize more stable and efficientPSCs. This review summarizes the recent progresses in inorganic HTMs adopted in various device architectures, with theirremarkable achievements in efficiency and long-term stability.