[24a-E206-1~13] 12.5 Organic solar cells

▲ [24a-E206-9] Carrier Transport Layer-Free Perovskite Solar Cells

〇Liang Wang¹, Tingli Ma², Shuzi Hayase¹ (1.Univ. of Electro-Communications, 2.Kyushu Inst. of technology)

Keywords:carrier transport-layer free

Power conversion efficiencies (PCEs) of up to 25.6 % have been reported for perovskite solar cells (PSCs). Thus, they have shown great potential for commercial applications. Therefore, simplifying technological process and reducing production costs have been a widespread concern among scientific and industrial communities. In this abstract, PSCs are prepared with the simplest device architecture. A high-quality perovskite film with few interface defects and good carrier transport is obtained by tuning the p-n properties, matching energy levels, and enhancing carrier collection and transport. A PCE of 12.01 % is achieved, which is the best reported to date for this device structure. The device also shows excellent long-term stability, owing to the elimination of charge transport layers and the usage of hydrophobic materials. This study provides a new approach to reduce production costs and simplify production of PSCs.