New analysis of suns-Voc and Voc(T): A simple method to quantify recombination channels in solar cells

Sachit Grover, Jian V. Li, David L. Young, Paul Stradins, Howard M. Branz

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

2 Citations (Scopus)

Abstract

Analyzing regions of dominant recombination in a solar cell is crucial to guide process modifications and device improvements that improve efficiency. Common characterizations such as dark and light current-voltage and quantum efficiency provide only qualitative insights into the distribution of recombination in a solar cell, especially when the cell contains a heterojunction emitter. The open-circuit voltage (Yoò is a sensitive indicator of recombination since generation equals recombination at that bias. We leverage the light and temperature dependence of Voc to quantify recombination in the space-charge (SCR), quasi-neutral (QNR) and junction-inter face regions of heterojunction solar cell. By combining the operating conditions and recombination parameters into a common equation for Voc, we enable the separation of recombination in different regions of the cell and provide a meaningful interpretation of previously known variables.

Original languageEnglish
Title of host publication39th IEEE Photovoltaic Specialists Conference, PVSC 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479932993
DOIs
Publication statusPublished - 2013
Event39th IEEE Photovoltaic Specialists Conference, PVSC 2013 - Tampa, FL, United States
Duration: 2013 Jun 162013 Jun 21

Publication series

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

Other

Other39th IEEE Photovoltaic Specialists Conference, PVSC 2013
Country/TerritoryUnited States
CityTampa, FL
Period13-06-1613-06-21

All Science Journal Classification (ASJC) codes

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

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