Nonradiative Recombination Dominates Voltage Losses in Cu(In,Ga)Se2 Solar Cells Fabricated using Different Methods
| Author(s) | Bothwell, Alexandra M. | |
| Author(s) | Wands, Jake | |
| Author(s) | Miller, Michael F. | |
| Author(s) | Kanevce, Ana | |
| Author(s) | Paetel, Stefan | |
| Author(s) | Tsoulka, Polyxeni | |
| Author(s) | Lepetit, Thomas | |
| Author(s) | Barreau, Nicolas | |
| Author(s) | Valdes, Nicholas | |
| Author(s) | Shafarman, William | |
| Author(s) | Rockett, Angus | |
| Author(s) | Arehart, Aaron R. | |
| Author(s) | Kuciauskas, Darius | |
| Date Accessioned | 2023-06-29T17:23:51Z | |
| Date Available | 2023-06-29T17:23:51Z | |
| Publication Date | 2023-06-06 | |
| Description | This article was originally published in Solar RRL. The version of record is available at: https://doi.org/10.1002/solr.202300075. © 2023 The Authors. Solar RRL published by Wiley-VCH GmbH. | |
| Abstract | Voltage losses reduce the photovoltaic conversion efficiency of thin-film solar cells and are a primary efficiency limitation in Cu(In,Ga)Se2. Herein, voltage loss analysis of Cu(In,Ga)Se2 solar cells fabricated at three institutions with variation in process, bandgap, absorber structure, postdeposition treatment (PDT), and efficiency is presented. Nonradiative voltage losses due to Shockley–Read–Hall charge carrier recombination dominate and constitute >75% of the total compared to <25% from radiative voltage losses. The radiative voltage loss results from nonideal absorption and carriers in band tails that stem from local composition-driven potential fluctuations. It is shown that significant bulk lifetime improvements are achieved for all alkali PDT processed absorbers, chiefly associated with reductions in nonradiative recombination. Primary voltage loss contributions (radiative and nonradiative) change little across fabrication processes, but variation in submechanisms (bulk lifetime, net acceptor concentration, and interface recombination) differentiate nonradiative loss pathways in this series of solar cells. | |
| Sponsor | This work was authored in part by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding is provided by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Solar Energy Technologies Office. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. This article has been contributed to by US Government contractors and their work is in the public domain in the USA. This material is based upon work supported by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technology Office (SETO) Award Number DE-EE0008755. The authors acknowledge German Federal Ministry for Economic Affairs and Energy under Project Number 03EE1078 (ODINCIGS). This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference, herein, to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. | |
| Citation | Bothwell, A.M., Wands, J., Miller, M.F., Kanevce, A., Paetel, S., Tsoulka, P., Lepetit, T., Barreau, N., Valdes, N., Shafarman, W., Rockett, A., Arehart, A.R. and Kuciauskas, D. (2023), Nonradiative Recombination Dominates Voltage Losses in Cu(In,Ga)Se2 Solar Cells Fabricated using Different Methods. Sol. RRL, 7: 2300075. https://doi.org/10.1002/solr.202300075 | |
| ISSN | 2367-198X | |
| URL | https://udspace.udel.edu/handle/19716/32961 | |
| Language | en_US | |
| Publisher | Solar RRL | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| Keywords | Cu(In Ga)Se2 | |
| Keywords | nonradiative recombination | |
| Keywords | solar cells | |
| Keywords | voltage losses | |
| Title | Nonradiative Recombination Dominates Voltage Losses in Cu(In,Ga)Se2 Solar Cells Fabricated using Different Methods | |
| Type | Article |
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