Damp heat-stable perovskite solar cells with tailored-dimensionality 2D/3D heterojunctions
Journal
Science (New York, N.Y.)
Journal Volume
376
Journal Issue
6588
Pages
73
Date Issued
2022-04
Author(s)
Azmi, Randi
Ugur, Esma
Seitkhan, Akmaral
Aljamaan, Faisal
Subbiah, Anand S
Liu, Jiang
Harrison, George T
Nugraha, Mohamad I
Eswaran, Mathan K
Babics, Maxime
Chen, Yuan
Xu, Fuzong
Allen, Thomas G
Rehman, Atteq Ur
Anthopoulos, Thomas D
Schwingenschlögl, Udo
De Bastiani, Michele
Aydin, Erkan
De Wolf, Stefaan
Abstract
If perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs) are to be commercialized, they must achieve long-term stability, which is usually assessed with accelerated degradation tests. One of the persistent obstacles for PSCs has been successfully passing the damp-heat test (85°C and 85% relative humidity), which is the standard for verifying the stability of commercial photovoltaic (PV) modules. We fabricated damp heat-stable PSCs by tailoring the dimensional fragments of two-dimensional perovskite layers formed at room temperature with oleylammonium iodide molecules; these layers passivate the perovskite surface at the electron-selective contact. The resulting inverted PSCs deliver a 24.3% PCE and retain >95% of their initial value after >1000 hours at damp-heat test conditions, thereby meeting one of the critical industrial stability standards for PV modules.
Type
journal article