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Electrochemical reactions under reverse bias create additional mobile ions that enable hole tunneling in metal halide perovskite diodes

delete2026-07-14
delete0
PRE
AI
K
Kell Fremouw
R
Ryan A. DeCrescent
X
Xianfu Zhang
Y
Yi Yang
B
Bin Chen
D
Daniel A. Morales
M
Matteo R.S. Poma
K
Kelly Schutt
F
Fangyuan Jiang
E
Edward H. Sargent
N
Neal R. Armstrong
D
David S. Ginger
J
Joseph M. Luther
M
Michael D. McGehee *
DOI：10.1016/j.joule.2026.102577delete
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Abstract

Abstract

En 中文
• Electrochemistry creates mobile ions, causing low breakdown voltages near −5 V • More than 1018 cm−3 mobile ions are created in 3 min of reverse bias at −6 V • Hole-transport layers (HTLs) inhibit Pb reduction and limit mobile ion generation • Weak HTLs enable reduction, mobile ion creation, and cell degradation

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