Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites | Zendy

Daehan Kim | Zendy; Hee Joon Jung | Zendy; Ik Jae Park | Zendy; Bryon W. Larson | Zendy; Sean P. Dunfield | Zendy; Chuanxiao Xiao | Zendy; Jekyung Kim | Zendy; Jinhui Tong | Zendy; Passarut Boonmongkolras | Zendy; Ji Su | Zendy; Fei Zhang | Zendy; Seong Ryul Pae | Zendy; Min Kyu Kim | Zendy; Seok Beom Kang | Zendy; Vinayak P. Dravid | Zendy; Joseph J. Berry | Zendy; Jin Young Kim | Zendy; Kai Zhu | Zendy; Dong Hoe Kim | Zendy; Byungha Shin | Zendy

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Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites

Author(s) -

Daehan Kim,

Hee Joon Jung,

Ik Jae Park,

Bryon W. Larson,

Sean P. Dunfield,

Chuanxiao Xiao,

Jekyung Kim,

Jinhui Tong,

Passarut Boonmongkolras,

Ji Su,

Fei Zhang,

Seong Ryul Pae,

Min Kyu Kim,

Seok Beom Kang,

Vinayak P. Dravid,

Joseph J. Berry,

Jin Young Kim,

Kai Zhu,

Dong Hoe Kim,

Byungha Shin

Publication year - 2020

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.aba3433

Subject(s) - tandem , perovskite (structure) , silicon , band gap , energy conversion efficiency , bromine , materials science , ion , optoelectronics , nanotechnology , chemistry , crystallography , organic chemistry , metallurgy , composite material

Engineering perovskites with anions The bandgap of the perovskite top layer in tandem silicon solar cells must be tuned to ∼1.7 electron volts. Usually, the cation composition is varied because the bromine-rich anion compositions with wide bandgaps are structurally unstable. Kimet al. show that by using phenethylammonium as a two-dimensional additive, along with iodine and thiocyanate, bromine-rich perovskite films can be stabilized. A tandem silicon cell delivered >26% certified power conversion efficiency, and a perovskite device maintained 80% of its initial power conversion efficiency of >20% after 1000 hours under illumination.Science , this issue p.155

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