Adsorbate effects on photoluminescence and electrical conductivity of porous silicon

TY - JOUR

T1 - Adsorbate effects on photoluminescence and electrical conductivity of porous silicon

AU - Ben-Chorin, Moshe

AU - Kux, Andreas

AU - Schechter, Israel

PY - 1994

Y1 - 1994

N2 - Porous silicon (p type) has been exposed to several chemical vapors at various partial pressures. The quenching of the photoluminescence by the adsorbates has been quantified and correlation to the electrical conductivity of the porous silicon sample has been studied. Some gases, e.g., water and benzene, have a small effect on the photoluminescence and on the conductivity, while others, e.g., methanol, reduce the photoluminescence by a factor of 2 and increase the conductivity by four orders of magnitude. This is accompanied with a qualitative change in the current-voltage characteristics. These changes have been found to be reversible and the temporal behavior of the system has been investigated.

AB - Porous silicon (p type) has been exposed to several chemical vapors at various partial pressures. The quenching of the photoluminescence by the adsorbates has been quantified and correlation to the electrical conductivity of the porous silicon sample has been studied. Some gases, e.g., water and benzene, have a small effect on the photoluminescence and on the conductivity, while others, e.g., methanol, reduce the photoluminescence by a factor of 2 and increase the conductivity by four orders of magnitude. This is accompanied with a qualitative change in the current-voltage characteristics. These changes have been found to be reversible and the temporal behavior of the system has been investigated.

UR - http://www.scopus.com/inward/record.url?scp=23344446670&partnerID=8YFLogxK

U2 - 10.1063/1.111136

DO - 10.1063/1.111136

M3 - 文章

AN - SCOPUS:23344446670

SN - 0003-6951

VL - 64

SP - 481

EP - 483

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

ER -