Sentaurus Simulation of Monolithic Solar Cells with High Open-Circuit Voltage

Shujian Xue, Andre Augusto, Stuart G. Bowden

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

1 Scopus citations

Abstract

The integration of multiple solar cells in series in a single wafer increases the output voltage, and reduces the output current. With this new concept we can power small appliances with a single wafer, and if these solar cells are integrated in a larger module the series resistance losses are mitigated. To isolate the individual cells, we space them apart in the wafer. The challenge is to optimize the spacing between cells to balance the short-circuit losses with leakages (narrow spacing). Increasing the surface recombination in the intercell region reduces the effect of leakage current, reducing the spacing between cell leading to higher current. Although initially simulations of monolithic solar cell only have less than 15 of efficiency, the new design can improve the efficiency to over 20. The new design increased the leakage resistance between the parallel cells which decreased the leakage current to less than 10 of the original value and increase the FF from 58.9 to 79.8.

Original languageEnglish (US)
Title of host publication2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3451-3455
Number of pages5
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
Volume2
ISSN (Print)0160-8371

Conference

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

Keywords

  • Sentaurus simulation
  • leakage current
  • monolithic cell
  • surface recombination

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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