Accelerated Stress Testing of Perovskite Photovoltaic Modules: Differentiating Degradation Modes with Electroluminescence Imaging

Schall, Jackson W.; Glaws, Andrew; Doumon, Nutifafa Y.; Silverman, Timothy J.; Owen-Bellini, Michael; Terwilliger, Kent; Uddin, Md Aslam; Rana, Prem; Berry, Joseph J.; Huang, Jinsong; Schelhas, Laura T.; Kern, Dana B.

doi:10.1002/solr.202300229

Accelerated Stress Testing of Perovskite Photovoltaic Modules: Differentiating Degradation Modes with Electroluminescence Imaging

Journal Article · Wed May 24 04:00:00 EDT 2023 · Solar RRL

DOI:https://doi.org/10.1002/solr.202300229· OSTI ID:1986125

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National Renewable Energy Laboratory (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Pennsylvania State Univ., University Park, PA (United States)
University of North Carolina, Chapel Hill, NC (United States)
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)

Herein, electroluminescence (EL) and thermal imaging are used to examine p–i–n metal halide perovskite (MHP) photovoltaic (PV) mini-modules (MA0.6FA0.4PbI3, 20 cells, 78 cm2) before and after indoor-accelerated stress testing or outdoor deployment. Distinct spatial patterns in the EL images emerge, which depend on the external stress conditions experienced by the mini-module. Imaging results highlight a distribution of dark speckle features that dominate after UV stress, attributed to widespread interfacial contact degradation. Lateral intensity gradients across cells dominate after thermal cycling (TC) stress, attributed to current crowding near scribe defects. While current–voltage analysis alone does not give full insight on the degradation process, this study shows that distinct degradation modes can be further defined by multimodal electro-optical imaging (i.e., EL combined with photoluminescence and dark lock-in thermography). Neither UV exposure nor TC-accelerated stress testing alone replicates the same degradation signatures observed after outdoor deployment, suggesting that multiple degradation modes occur under concurrent stressors outdoors. Finally, spatial characterization of degradation modes in MHP PV mini-modules before and after accelerated stress testing lays the groundwork for developing targeted accelerated stress testing procedures through comparison with outdoor aging.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1986125

Alternate ID(s):: OSTI ID: 1983416

Report Number(s):: NREL/JA--5K00-85775; MainId:86548; UUID:b440b896-c02f-48af-a7b9-c787ed751ea0; MainAdminID:69634

Journal Information:: Solar RRL, Journal Name: Solar RRL Journal Issue: 14 Vol. 7; ISSN 2367-198X

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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