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Title: High work function MoO2 back contacts for improved solar cell performance

Patent ·
OSTI ID:1632479
; ; ; ;

Improved high work function back contacts for solar cells are provided. In one aspect, a method of forming a solar cell includes: forming a completed solar cell having a substrate coated with an electrically conductive material, an absorber disposed on the electrically conductive material, a buffer layer disposed on the absorber, a transparent front contact disposed on the buffer layer, and a metal grid disposed on the transparent front contact; removing the substrate and the electrically conductive material using exfoliation, exposing a backside surface of the solar cell; depositing a high work function material onto the back side surface of the solar cell; and depositing a back contact onto the high work function material. A solar cell formed by the present techniques is also provided. Yield of the exfoliated device can be improved by removing bubbles from adhesive used for exfoliation and/or forming contact pads to access the metal grid.

Research Organization:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0006334
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Number(s):
10,541,346
Application Number:
15/425,717
OSTI ID:
1632479
Resource Relation:
Patent File Date: 02/06/2017
Country of Publication:
United States
Language:
English

References (27)

Exfoliating method, transferring method of thin film device, and thin film device, thin film integrated circuit device, and liquid crystal display device produced by the same patent November 2004
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