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Title: Inductively Coupled Plasma Reactive Ion Etching of AlGaAsSb and InGaAsSb for Quaternary Antimonide MIM Thermophotovoltaics

Technical Report ·
DOI:https://doi.org/10.2172/805334· OSTI ID:805334

In this letter we report on the inductively coupled plasma reactive ion etching (ICP-RIE) of InGaAsSb and AlGaAsSb for the fabrication of quaternary monolithic interconnected module (MIM) thermophotovoltaic (TPV) devices. A rapid dry etch process is described that produces smooth surfaces using BCl[sub]3 for AlGaAsSb and InGaAsSb capped with GaSb. Uncapped InGaAsSb was etched by adding an H[sub]2 plasma preclean to reduce surface oxides. InGaAsSb etch rate was studied as a function of accelerating voltage, RF power, temperature and pressure. The etch conditions found for InGaAsSb were used for AlGaAsSb etching to determine the effectiveness for isolation of the MIM cells.

Research Organization:
Bettis Atomic Power Lab., West Mifflin, PA (US); Sandia National Laboratory (US)
Sponsoring Organization:
US Department of Energy (US)
DOE Contract Number:
N00024-98-C-4064
OSTI ID:
805334
Report Number(s):
B-T-3447; TRN: US200324%%187
Resource Relation:
Other Information: Supercedes report DE00805334; PBD: 1 Oct 2002; PBD: 1 Oct 2002
Country of Publication:
United States
Language:
English

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