Luminescent Solar Concentrator Tandem-on-Silicon with above 700mV Passivated Contact Silicon Bottom Cell

San Theingi, David R. Needell, Haley Bauser, Megan Phelan, William Nemeth, Dawn Findley, Hanxiao Su, Brent Koscher, Zach Nett, Ognjen Ilic, Colton R. Bukowsky, Ralph Nuzzo, A. Paul Alivisatos, John Geisz, Paul Stradins, Harry A. Atwater

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

Abstract

Luminescent solar concentrator (LSC) tandem-on-silicon (Si) provides a route towards achieving higher than 30% overall efficiency which can overcome the theoretical efficiency limit of a single junction Si cell. Here, we present optical coupling and performance of high Voc passivated contact Si bottom cell for LSC tandem-on-Si where the top module consists of highly efficient luminophores and an array of micro InGaP cells embedded in a poly (lauryl methacrylate) waveguide. In this device configuration, InGaP cell area coverage is only ∼0.5% of the total LSC area which significantly reduces the high cost III-V material usage. The performance of Si sub-cell is investigated under LSC spectrum and is compared against the measurement done under 1 μm thick InGaP filter which mimics the spectrum seen by Si bottom cell in a conventional III-V/Si tandem. Voc of greater than 700 mV has been observed for the passivated contact Si bottom cell in these tandem applications.

Original languageEnglish (US)
Title of host publication2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages747-749
Number of pages3
ISBN (Electronic)9781728104942
DOIs
StatePublished - Jun 2019
Externally publishedYes
Event46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States
Duration: Jun 16 2019Jun 21 2019

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Conference

Conference46th IEEE Photovoltaic Specialists Conference, PVSC 2019
CountryUnited States
CityChicago
Period6/16/196/21/19

Keywords

  • luminescent solar concentrator
  • passivated contact cells
  • silicon

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    Theingi, S., Needell, D. R., Bauser, H., Phelan, M., Nemeth, W., Findley, D., Su, H., Koscher, B., Nett, Z., Ilic, O., Bukowsky, C. R., Nuzzo, R., Alivisatos, A. P., Geisz, J., Stradins, P., & Atwater, H. A. (2019). Luminescent Solar Concentrator Tandem-on-Silicon with above 700mV Passivated Contact Silicon Bottom Cell. In 2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019 (pp. 747-749). [8980809] (Conference Record of the IEEE Photovoltaic Specialists Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC40753.2019.8980809