Advanced co-sublimation hardware for deposition of graded ternary alloys in thin-film applications

© 2018 IEEE. CdTe photovoltaic devices with efficiency over 22% have been demonstrated. Sublimated CdTe photovoltaics with efficiency over 19% have been reported using graded alloying of Se in CdTe absorber films. Grading of alloy films has been identified as an important characteristic to achieve h...

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Bibliographic Details
Main Authors: Amit H Munshi, Jason M Kephart, Carey L Reich, Davis R Hemenway, Tushar M Shimpi, Ali Abbas, Kevan C Cameron, Adam H Danielson, Kurt L Barth, Michael Walls, Walajabad S Sampath
Format: Default Conference proceeding
Published: 2020
Subjects:
Cadmium compounds
photovoltaic cells
alloying
II-VI semiconductor materials
solar energy
Science & Technology
Technology
Green & Sustainable Science & Technology
Energy & Fuels
Engineering, Electrical & Electronic
Science & Technology - Other Topics
Engineering
PHOTOVOLTAICS
EFFICIENCY
Online Access:https://hdl.handle.net/2134/11673525.v1
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Summary:© 2018 IEEE. CdTe photovoltaic devices with efficiency over 22% have been demonstrated. Sublimated CdTe photovoltaics with efficiency over 19% have been reported using graded alloying of Se in CdTe absorber films. Grading of alloy films has been identified as an important characteristic to achieve higher device performance using more complex device structures. An advanced co-sublimation source has been designed and developed to deposit highly controlled CdTe based ternary alloys. An advanced shutter mechanism enables changing the composition of the deposited films during sublimation. The hardware used for advanced co-sublimation and initial materials characterization is presented in this study.

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