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Self-Assembled Monolayer Patterning for PolySi/SiO2 Passivated Contacts

Conference ·

We utilize hexamethyldisilazane (HMDS) based self assembled monolayers to pattern polysilicon (polySi) passivated contacts. We find process conditions that allow for etching front side n/polySi between fingers; thereby increasing Jsc. Importantly, the Voc does not degrade indicating the additional process steps do not introduce defects or impurities. HMDS layers remain on the surface for metallization without detriment to transport.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE National Renewable Energy Laboratory (NREL)
DOE Contract Number:
AC36-08GO28308
OSTI ID:
2309710
Report Number(s):
NREL/CP-5900-88884; MainId:89663; UUID:14b2e7fb-4e9b-48ff-b13d-edfaf5e31693; MainAdminId:71880
Country of Publication:
United States
Language:
English

References (3)

Molecular Self-Assembled Monolayers and Multilayers for Organic and Unconventional Inorganic Thin-Film Transistor Applications journal April 2009
Engineering Silicon Oxide Surfaces Using Self-Assembled Monolayers journal October 2005
Deep UV photochemistry and patterning of self-assembled monolayer films journal April 1992