Details

Autor(en) / Beteiligte

• Wang, Shumao
• Guo, Haodan
• Wu, Jinpeng
• Lei, Yan
• Li, Xiangrong
• Fang, Yanyan
• Dai, Yuhua
• Xiang, Wanchun
• Lin, Yuan

Titel

High-conductivity thiocyanate ionic liquid interface engineering for efficient and stable perovskite solar cells

Ist Teil von

• Chemical communications (Cambridge, England), 2022-07, Vol.58 (6), p.8384-8387

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A high-conductivity thiocyanate ionic liquid (EMIMSCN) was introduced into perovskite solar cells for the first time. The high conductivity of EMIMSCN ensures an adequate supply of free SCN − anions and EMIM + cations, so as to multifunctionally passivate the I vacancy and Pb-I antisite defects and realize an optimized interfacial energy level. Consequently, the devices with EMIMSCN treatment achieve a high PCE of 22.55% with substantial enhancement in stability. This simple and efficient strategy provides new insights into the selection of passivation agents for efficient and stable PSCs. A high-conductivity thiocyanate ionic liquid was employed for the first time in perovskite solar cells, realizing multifunctional defect passivation and interfacial energy alignment.