< 700 mV Open-Circuit Voltages on Defect-Engineered P-type Silicon Heterojunction Solar Cells on Czochralski and Multicrystalline Wafers

Daniel Chen, Moonyong Kim, Jianwei Shi, Zhengshan Yu, Ashling Mehdi Leilaeioun, Shaoyang Liu, Bruno Stefani, Stuart Wenham, Roland Einhaus, Zachary Holman, Brett Hallam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Silicon heterojunction solar cells are primarily fabricated with high-quality wafers, resulting in a higher manufacturing cost than mainstream solar cells. We explore the impact of defect engineering methods of hydrogenation and gettering into silicon heterojunction solar cells fabricated using low-lifetime, commercial-grade, p-type, Czochralski-grown monocrystalline and high-performance multicrystalline wafers. We demonstrate solar cells with independently verified opencircuit voltages of 707 mV and 702 mV on monocrystalline and multicrystalline silicon wafers, respectively, thus exceeding 700 mV on multicrystalline silicon materials for the first time in the world. These remarkably high open-circuit voltages reveal the potential of cost-competitive low-quality p-type silicon wafers for making high-efficiency solar cells with efficiencies without the need of shifting towards expensive, high-quality wafers.

Original languageEnglish (US)
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1677-1681
Number of pages5
ISBN (Electronic)9781538685297
DOIs
StatePublished - Nov 26 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: Jun 10 2018Jun 15 2018

Other

Other7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
CountryUnited States
CityWaikoloa Village
Period6/10/186/15/18

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Chen, D., Kim, M., Shi, J., Yu, Z., Leilaeioun, A. M., Liu, S., Stefani, B., Wenham, S., Einhaus, R., Holman, Z., & Hallam, B. (2018). < 700 mV Open-Circuit Voltages on Defect-Engineered P-type Silicon Heterojunction Solar Cells on Czochralski and Multicrystalline Wafers. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC (pp. 1677-1681). [8548239] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2018.8548239