Light-induced long-range hydrogen motion in hydrogenated amorphous silicon at room temperature

被引：16

作者：

Cheong, HM

Lee, SH

Nelson, BP

Mascarenhas, A

Deb, SK

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

[2] Sogang Univ, Dept Phys, Seoul 121742, South Korea

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 17期

关键词：

D O I：

10.1063/1.1320015

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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/cm(2) 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 9x10(-4) at. %. (C) 2000 American Institute of Physics. [S0003-6951(00)02243-9].

引用

页码：2686 / 2688

页数：3

共 9 条

[1] Hydrogen diffusion and mobile hydrogen in amorphous silicon
Branz, HM
[J]. PHYSICAL REVIEW B, 1999, 60 (11): : 7725 - 7727
[2] Light-induced D diffusion measurements in hydrogenated amorphous silicon: Testing H metastability models
Branz, HM
Asher, S
Gleskova, H
Wagner, S
[J]. PHYSICAL REVIEW B, 1999, 59 (08): : 5513 - 5520
[3] Hydrogen collision model: Quantitative description of metastability in amorphous silicon
Branz, HM
[J]. PHYSICAL REVIEW B, 1999, 59 (08): : 5498 - 5512
[4] Hydrogen ion motion in amorphous silicon solar cells at elevated temperatures
Carlson, DE
Rajan, K
[J]. APPLIED PHYSICS LETTERS, 1996, 69 (10) : 1447 - 1449
[5] Electrochromic mechanism in a-WO3-y thin films
Lee, SH
Cheong, HM
Zhang, JG
Mascarenhas, A
Benson, DK
Deb, SK
[J]. APPLIED PHYSICS LETTERS, 1999, 74 (02) : 242 - 244
[6] Raman spectroscopic studies of electrochromic a-WO3
Lee, SH
Cheong, HM
Tracy, CE
Mascarenhas, A
Benson, DK
Deb, SK
[J]. ELECTROCHIMICA ACTA, 1999, 44 (18) : 3111 - 3115
[7] Low hydrogen content, high quality hydrogenated amorphous silicon grown by Hot-Wire CVD
Nelson, BP
Crandall, RS
Iwaniczko, E
Mahan, AH
Wang, Q
Xu, YQ
Gao, W
[J]. AMORPHOUS AND HETEROGENEOUS SILICON THIN FILMS: FUNDAMENTALS TO DEVICES-1999, 1999, 557 : 97 - 102
[8] LIGHT-ENHANCED HYDROGEN MOTION IN A-SI-H
SANTOS, PV
JOHNSON, NM
STREET, RA
[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (19) : 2686 - 2689
[9] REVERSIBLE CONDUCTIVITY CHANGES IN DISCHARGE-PRODUCED AMORPHOUS SI
STAEBLER, DL
WRONSKI, CR
[J]. APPLIED PHYSICS LETTERS, 1977, 31 (04) : 292 - 294

← 1 →