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Title: 3D Lifetime Tomography Reveals How CdCl 2 Improves Recombination Throughout CdTe Solar Cells

When using two-photon tomography, carrier lifetimes are mapped in polycrystalline CdTe photovoltaic devices. These 3D maps probe subsurface carrier dynamics that are inaccessible with traditional optical techniques. They reveal that CdCl 2 treatment of CdTe solar cells suppresses nonradiative recombination and enhances carrier lifetimes throughout the film with substantial improvements particularly near subsurface grain boundaries and the critical buried p-n junction.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [2] ;  [2] ;  [3] ;  [4]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry; PlANT PV Inc., Oakland, CA (United States)
  2. PlANT PV Inc., Oakland, CA (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
Publication Date:
Report Number(s):
NREL/JA-5K00-67498
Journal ID: ISSN 0935-9648
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 29; Journal Issue: 3; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; CdTe; CdCl2; photovoltaics; tomography; two-photon
OSTI Identifier:
1340656