ADSORPTION PROPERTIES OF POROUS SILICON CHARACTERIZED BY OPTICALLY ENHANCED XE-129 NMR-SPECTROSCOPY

被引：36

作者：

PIETRASS, T ^{[1
]}

BIFONE, A ^{[1
]}

PINES, A ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

来源：

SURFACE SCIENCE | 1995年 / 334卷 / 1-3期

关键词：

NUCLEAR MAGNETIC RESONANCE; PHYSICAL ADSORPTION; SURFACE STRUCTURE;

D O I：

10.1016/0039-6028(95)80024-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Highly spin polarized xenon is used to study the adsorption properties of porous silicon surfaces by Xe-129 NMR spectroscopy. The sensitivity enhancement through optical pumping allows the NMR characterization of small amounts of physisorbed xenon in a pressure regime typical for adsorption isotherms. Fully hydrogen terminated porous silicon, porous silicon with an increased number of dangling bonds and porous silicon after methanol adsorption are characterized by the adsorbed Xe-129 NMR lineshape, chemical shift and relaxation behavior.

引用

页码：L730 / L734

页数：5

共 33 条

[1] CHEMICAL SURFACE MODIFICATION OF POROUS SILICON [J].

ANDERSON, RC ;

MULLER, RS ;

TOBIAS, CW .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (05) :1393-1396

[2] AN ISOTHERM EQUATION FOR ADSORPTION ON FRACTAL SURFACES OF HETEROGENEOUS POROUS MATERIALS [J].

AVNIR, D ;

JARONIEC, M .

LANGMUIR, 1989, 5 (06) :1431-1433

[3] ORIGIN OF LUMINESCENCE IN POROUS SILICON [J].

BANERJEE, S ;

NARASIMHAN, KL ;

AYYUB, P ;

SRIVASTAVA, AK ;

SARDESAI, A .

SOLID STATE COMMUNICATIONS, 1992, 84 (06) :691-693

[4] SLOWING DOWN OF RUBIDIUM-INDUCED NUCLEAR-SPIN RELAXATION OF XE-129 GAS IN A MAGNETIC-FIELD [J].

BHASKAR, ND ;

HAPPER, W ;

LARSSON, M ;

ZENG, X .

PHYSICAL REVIEW LETTERS, 1983, 50 (02) :105-108

[5] EFFICIENCY OF SPIN EXCHANGE BETWEEN RUBIDIUM SPINS AND XE-129 NUCLEI IN A GAS [J].

BHASKAR, ND ;

HAPPER, W ;

MCCLELLAND, T .

PHYSICAL REVIEW LETTERS, 1982, 49 (01) :25-28

[6] PROBING CDS NANOCRYSTAL SURFACES WITH LASER-POLARIZED XENON [J].

BOWERS, CR ;

PIETRASS, T ;

BARASH, E ;

PINES, A ;

GRUBBS, RK ;

ALIVISATOS, AP .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (38) :9400-9404

[7] Adsorption of gases in multimolecular layers [J].

Brunauer, S ;

Emmett, PH ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319

[8] SILICON QUANTUM WIRE ARRAY FABRICATION BY ELECTROCHEMICAL AND CHEMICAL DISSOLUTION OF WAFERS [J].

CANHAM, LT .

APPLIED PHYSICS LETTERS, 1990, 57 (10) :1046-1048

[9] ROOM-TEMPERATURE EXCITONIC NONLINEAR-OPTICAL EFFECTS IN SEMICONDUCTOR QUANTUM-WELL STRUCTURES [J].

CHEMLA, DS ;

MILLER, DAB .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1985, 2 (07) :1155-1173

[10] LOW-TEMPERATURE (144-K) XE-129 NMR OF AMORPHOUS MATERIALS - EFFECTS OF PORE-SIZE DISTRIBUTION ON CHEMICAL-SHIFT [J].

CHEUNG, TTP .

JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (22) :7549-7552

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