High-efficiency cell structures and processes applied to photovoltaic-grade Czochralski silicon

We performed a detailed study to examine the limiting performance available using "photovoltaic-grade" Cz silicon. Photovoltaic-grade silicon refers to silicon produced by the photovoltaic industry, which may differ from the silicon used in the semiconductor device industry in impurity and...

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Main Authors: Gee, J.M., King, R.R., Mitchell, K.W.
Format: Conference Proceeding
Language:English
Subjects:
Fabrication
Laboratories
Photovoltaic cells
Photovoltaic systems
Radiative recombination
Silicon
Solar power generation
Spontaneous emission
Substrates
Thermal degradation
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King, R.R.
Mitchell, K.W.
description We performed a detailed study to examine the limiting performance available using "photovoltaic-grade" Cz silicon. Photovoltaic-grade silicon refers to silicon produced by the photovoltaic industry, which may differ from the silicon used in the semiconductor device industry in impurity and defect concentrations. The study included optimization of fabrication processes, development of advanced device structures, and detailed model calculations to project future performance improvements. Process and device optimization resulted in demonstration of 75-/spl mu/s bulk lifetimes and 17.6% efficient large-area cells using photovoltaic-grade Cz silicon. Detailed calculations based on the material and device evaluation of the present work project efficiencies of 20% for photovoltaic-grade Cz silicon with properly optimized processing and device structures.
doi_str_mv 10.1109/PVSC.1996.564030
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identifier ISSN: 0160-8371
ispartof Conference Record of the Twenty Fifth IEEE Photovoltaic Specialists Conference - 1996, 1996, p.409-412
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source IEEE Xplore All Conference Series
subjects Fabrication
Laboratories
Photovoltaic cells
Photovoltaic systems
Radiative recombination
Silicon
Solar power generation
Spontaneous emission
Substrates
Thermal degradation
title High-efficiency cell structures and processes applied to photovoltaic-grade Czochralski silicon
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