Premium
The Synergism of DMSO and Diethyl Ether for Highly Reproducible and Efficient MA 0.5 FA 0.5 PbI 3 Perovskite Solar Cells
Author(s) -
Zhang Yi,
Chen Min,
Zhou Yuanyuan,
Li Wenhao,
Lee Yonghui,
Kanda Hiroyuki,
Gao XiaoXin,
Hu Ruiyuan,
Brooks Keith Gregory,
Zia Rashid,
Kinge Sachin,
Padture Nitin P.,
Nazeeruddin Mohammad Khaja
Publication year - 2020
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202001300
Subject(s) - perovskite (structure) , materials science , formamidinium , iodide , energy conversion efficiency , diethyl ether , chemical engineering , crystallite , phase (matter) , perovskite solar cell , inorganic chemistry , organic chemistry , optoelectronics , chemistry , engineering , metallurgy
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 (MAPbI 3 ), 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 MA 0.5 FA 0.5 PbI 3 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.