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22.6% Efficient Solar Cells with Polysilicon Passivating Contacts on n-type Solar-Grade Wafers

Basnet, Rabin; Phang, Sieu Pheng; Samundsett, Christian; Yan, Di; Liang, Wensheng; Sun, Ryan; Armand, Stephane; Einhaus, Roland; Degoulange, Julien; Macdonald, Daniel


Czochralski (Cz)‐grown upgraded metallurgical‐grade (UMG) silicon wafers degrade significantly during high‐temperature processes, eroding their appeal as a low‐cost alternative to conventional electronic‐grade silicon wafers. However, the thermal degradation in UMG wafers can be delayed by utilizing a prefabrication annealing step. Based on this, a high‐efficiency solar‐cell process is modified by selecting a single‐boron diffusion step and applying phosphorus‐doped polycrystalline films as...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: RRL Solar
DOI: 10.1002/solr.201900297


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