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Title: CdTe Solar Cells: The Role of Copper

In this work, we report on developing 1D reaction-diffusion solver to understand the kinetics of p-type doping formation in CdTe absorbers and to shine some light on underlying causes of metastabilities observed in CdTe PV devices. Evolution of intrinsic and Cu-related defects in CdTe solar cell has been studied in time-space domain self-consistently with free carrier transport and Poisson equation. Resulting device performance was simulated as a function of Cu diffusion anneal time showing pronounced effect the evolution of associated acceptor and donor states can cause on device characteristics. Although 1D simulation has intrinsic limitations when applied to poly-crystalline films, the results suggest strong potential of the approach in better understanding of the performance and metastabilities of CdTe photovoltaic device.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [1] ;  [1]
  1. Arizona State University
  2. First Solar
Publication Date:
OSTI Identifier:
1169766
Report Number(s):
DOE-ASU-0006344-4
DOE Contract Number:
EE0006344
Resource Type:
Conference
Resource Relation:
Conference: 17th International Workshop on Computational Electronics, Paris, France, 3-6 June 2014
Research Org:
Arizona State University
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Contributing Orgs:
Arizona State University
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY