abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 03월 04일 13시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Porous Silicon Chip as a Dual Transducer

등록일
2005년 2월 17일 14시 30분 35초
접수번호
0915
발표코드
20P58포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅱ>
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
고영대, 김지훈, 박종선, 조성동, 손홍래
조선대학교 화학과,
Porous silicon samples showing dual properties, photoluminescence and optical reflectivity, were prepared by an electrochemical etch of p-type silicon (boron-doped, <100> orientation) of resistivity between 1-10 Ωcm. The etching solution was prepared by adding an equal volume of pure ethanol (Fisher Scientific) to an aqueous solution of HF (48% by weight; Fisher Scientific). The porous silicon was illuminated with a 300 W tungsten lamp for the duration of etch. Etching was carried out as a two-electrode galvanostatic procedure at an anodic current. The porosity of the sample was about 80%. Three different types of porous silicon, fresh porous silicon (Si-H terminated), oxidized porous silicon (Si-OH terminated), and surface-derivatized porous silicon (Si-R terminated) were prepared by the thermal oxidation and hydrosilylation. Then the samples were exposed to the vapor of various organics, such as methanol, ethanol, acetone, hexane, and toluene. Both reflectivity and photoluminescence were simultaneously measured under the exposure of organic vapors. The surface of porous silicon was characterized by FTIR instrument. The possible application of porous silicon as sensors will be discussed.

상단으로