Light-Induced Long-Range Hydrogen Motion in Hydrogenated Amorphous Silicon at Room Temperature

Hyeonsik M. Cheong; Se Hee Lee; Brent P. Nelson; Angelo Mascarenhas; Satyen K. Deb

doi:10.1063/1.1320015

Light-Induced Long-Range Hydrogen Motion in Hydrogenated Amorphous Silicon at Room Temperature

Hyeonsik M. Cheong
, Se Hee Lee
, Brent P. Nelson
, Angelo Mascarenhas
, Satyen K. Deb

Materials, Chemical, and Computational Science Research Operations

Research output: Contribution to journal › Article › peer-review

17 Scopus Citations

Abstract

We present evidence for long-range hydrogen motion in hydrogenated amorphous silicon (a-Si:H) under room-temperature illumination, by monitoring the changes in the Raman spectrum of an a-WO₃ overlayer with illumination. We observe that illumination causes hydrogen to diffuse out of the a-Si:H layer into the a-WO₃ layer. This hydrogen motion is observed to saturate after about 30 min when the a-Si:H is illuminated with 15 W/cm³ of the 514.5 nm laser line at room temperature. The amount of hydrogen that diffuses out of the a-Si:H layer is estimated semiquantitatively to be approximately 9 × 10^-4 at. %.

Original language	American English
Pages (from-to)	2686-2688
Number of pages	3
Journal	Applied Physics Letters
Volume	77
Issue number	17
DOIs	https://doi.org/10.1063/1.1320015 https://doi.org/10.1063/1.1320015
State	Published - 2000

NLR Publication Number

NREL/JA-590-29548

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@article{5c40012b501643d1b82cd1082e835959,

title = "Light-Induced Long-Range Hydrogen Motion in Hydrogenated Amorphous Silicon at Room Temperature",

abstract = "We present evidence for long-range hydrogen motion in hydrogenated amorphous silicon (a-Si:H) under room-temperature illumination, by monitoring the changes in the Raman spectrum of an a-WO3 overlayer with illumination. We observe that illumination causes hydrogen to diffuse out of the a-Si:H layer into the a-WO3 layer. This hydrogen motion is observed to saturate after about 30 min when the a-Si:H is illuminated with 15 W/cm3 of the 514.5 nm laser line at room temperature. The amount of hydrogen that diffuses out of the a-Si:H layer is estimated semiquantitatively to be approximately 9 × 10-4 at. \%.",

author = "Cheong, \{Hyeonsik M.\} and Lee, \{Se Hee\} and Nelson, \{Brent P.\} and Angelo Mascarenhas and Deb, \{Satyen K.\}",

year = "2000",

doi = "10.1063/1.1320015",

language = "American English",

volume = "77",

pages = "2686--2688",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Light-Induced Long-Range Hydrogen Motion in Hydrogenated Amorphous Silicon at Room Temperature

AU - Cheong, Hyeonsik M.

AU - Lee, Se Hee

AU - Nelson, Brent P.

AU - Mascarenhas, Angelo

AU - Deb, Satyen K.

PY - 2000

Y1 - 2000

N2 - We present evidence for long-range hydrogen motion in hydrogenated amorphous silicon (a-Si:H) under room-temperature illumination, by monitoring the changes in the Raman spectrum of an a-WO3 overlayer with illumination. We observe that illumination causes hydrogen to diffuse out of the a-Si:H layer into the a-WO3 layer. This hydrogen motion is observed to saturate after about 30 min when the a-Si:H is illuminated with 15 W/cm3 of the 514.5 nm laser line at room temperature. The amount of hydrogen that diffuses out of the a-Si:H layer is estimated semiquantitatively to be approximately 9 × 10-4 at. %.

AB - We present evidence for long-range hydrogen motion in hydrogenated amorphous silicon (a-Si:H) under room-temperature illumination, by monitoring the changes in the Raman spectrum of an a-WO3 overlayer with illumination. We observe that illumination causes hydrogen to diffuse out of the a-Si:H layer into the a-WO3 layer. This hydrogen motion is observed to saturate after about 30 min when the a-Si:H is illuminated with 15 W/cm3 of the 514.5 nm laser line at room temperature. The amount of hydrogen that diffuses out of the a-Si:H layer is estimated semiquantitatively to be approximately 9 × 10-4 at. %.

UR - https://www.scopus.com/pages/publications/0000125106

U2 - 10.1063/1.1320015

DO - 10.1063/1.1320015

M3 - Article

AN - SCOPUS:0000125106

SN - 0003-6951

VL - 77

SP - 2686

EP - 2688

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

ER -

Light-Induced Long-Range Hydrogen Motion in Hydrogenated Amorphous Silicon at Room Temperature

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