The Synergism of DMSO and Diethyl Ether for Highly Reproducible and Efficient MA0.5FA0.5PbI3 Perovskite Solar Cells. Issue 29 (25th June 2020)

• Record Type: Journal Article
• Authors: Zhang, Yi; Chen, Min; Zhou, Yuanyuan; Li, Wenhao; Lee, Yonghui; Kanda, Hiroyuki; Gao, Xiao‐Xin; Hu, Ruiyuan; Brooks, Keith Gregory; Zia, Rashid; Kinge, Sachin; Padture, Nitin P.; Nazeeruddin, Mohammad Khaja
• Is Part Of: Advanced energy materials. Volume 10:Issue 29(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-06-25
• Subjects: alkaline metal free -- high certified efficiency -- perovskite solar cells -- pure iodide; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.202001300
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: Composition and film quality of perovskite are crucial for the further improvement of perovskite solar cells (PSCs), including efficiency, reproducibility, and stability. Here, it is demonstrated that by simply mixing 50% of formamidinium (FA + ) into methylammonium lead iodide (MAPbI3 ), a highly crystalline, stable phase, and compact, polycrystalline grain morphology perovskite is formed by using a solvent‐mediated phase transformation process via the synergism of dimethyl sulfoxide and diethyl ether, which shows long carrier lifetime, low trap state density, and a record certified 21.8% power conversion efficiency (PCE) in pure‐iodide, alkaline‐metal‐free MA0.5 FA0.5 PbI3 perovskite‐based PSCs. These PSCs show very high operational stability, with 85% PCE retention upon 1000 h 1 Sun intensity illumination. A 17.33% PCE module (6.5 × 7 cm 2 ) is also demonstrated, attesting to the scalability of such devices. Abstract : By using a solvent‐mediated phase transformation process, a record certified 21.8% power conversion efficiency in pure‐iodide, alkaline‐metal‐free MA0.5 FA0.5 PbI3 perovskite‐based solar cells is achieved.