Omelchenko, Stefan T. and Tolstova, Yulia and Atwater, Harry A. and Lewis, Nathan S. (2017) Excitonic effects in photovoltaic materials with large exciton binding energies. In: 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC). IEEE , Piscataway, NJ, pp. 1-4. ISBN 978-1-5090-5605-7. https://resolver.caltech.edu/CaltechAUTHORS:20180601-090256322
Full text is not posted in this repository. Consult Related URLs below.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20180601-090256322
Abstract
We investigate the effect of excitons on charge transport in photovoltaic materials with large exciton binding energies using Cu_2O as a model system. We develop a thermodynamic model to estimate the fraction of excitons in Cu_2O at quasi-equilibrium and find that over 20% of the generated population of carriers during photovoltaic operation could be excitons. Experiments show the presence of excitons at room temperature under visible light excitation and current collection due to excitons during device operation. This work demonstrates that excitons can play a fundamental role in photovoltaic materials with large exciton binding energies and lays the foundation for further studies.
| Item Type: | Book Section | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Related URLs: |
| |||||||||
| ORCID: |
| |||||||||
| Additional Information: | © 2017 IEEE. | |||||||||
| Group: | JCAP | |||||||||
| DOI: | 10.1109/PVSC.2017.8366860 | |||||||||
| Record Number: | CaltechAUTHORS:20180601-090256322 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180601-090256322 | |||||||||
| Official Citation: | S. T. Omelchenko, Y. Tolstova, H. A. Atwater and N. S. Lewis, "Excitonic effects in photovoltaic materials with large exciton binding energies," 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC), Washington, DC, USA, 2017, pp. 1-4. doi: 10.1109/PVSC.2017.8366860 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 86738 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 01 Jun 2018 16:11 | |||||||||
| Last Modified: | 15 Nov 2021 20:41 |
Repository Staff Only: item control page
