Abstract

Perovskite solar cells (PSCs) have emerged as the prominent candidate for next-generation solar cells. To achieve feasible high-power conversion efficiency in cells, many research groups have developed electron transport materials. This study explores the photovoltaic characteristics of a two-stage SnO₂ based electron transport layer fabricated by the spin coating process. The spin coating processed two-stage tin oxide (SnO₂) improved the power conversion efficiency by 15.16% in comparison to the single stage compact SnO₂ based electron transporting layer for PSCs. However, the annealing process remains at a low temperature. This reduced the roughness of the two-stage film, which improved the performance.

摘要

钙钛矿太阳能电池 (PSC) 已成为下一代太阳能电池的重要候选者。为了在电池中实现可行的高功率转换效率，许多研究小组开发了电子传输材料。本研究探讨了通过旋涂工艺制造的两级 SnO _{2基电子传输层的光伏特性。与用于 PSC 的单级紧凑型 SnO 2}基电子传输层相比，旋涂处理的两级氧化锡 (SnO ₂ ) 将功率转换效率提高了 15.16% 。然而，退火过程保持在低温下。这降低了两级膜的粗糙度，从而提高了性能。