[논문]Optical and electrochromic properties of sol–gel WO3 films on conducting glass

Biswas, P.K.; Pramanik, N.C.; Mahapatra, M.K.; Ganguli, D.; Livage, J.

doi:10.1016/S0167-577X(03)00336-7

Optical and electrochromic properties of sol–gel WO3 films on conducting glass

Materials letters, v.57 no.28, 2003년, pp.4429 - 4432

Biswas, P.K. (Corresponding author. Fax: +91-33-4730957.) , Pramanik, N.C. (Sol–) , Mahapatra, M.K. (Gel Division, Central Glass and Ceramic Research Institute, Kolkata 700 032, India) , Ganguli, D. (Sol–) , Livage, J. (Gel Division, Central Glass and Ceramic Research Institute, Kolkata 700 032, India)

Abstract ▼ AI-Helper

AbstractThe precursor containing peroxotungstic acid (PTA) was prepared by the reaction of tungstic acid with H2O2 (30%) solution in water–ethanol mixture. This was utilized for the deposition of WO3·nH2O film on conducting (F-doped SnO2 coated) flat glass substrate by the dipping technique. The films were cured in the temperature range of 200–300 °C in air. The optimum thickness of the film (300–500 nm) was obtained by successive operations (3–5 numbers). Films of around 500 nm thickness exhibited 60–70% transmission in the visible region. Electrochromic properties (colouration↔bleaching) of the films were studied by cyclic voltammetry (CV) using a classical three-electrode potentiostatic cell system. The cell system consists of a WO3-coated sample as working electrode, a platinum rod as counter electrode, Ag/AgCl as reference electrode and 0.5 M LiClO4 in propylene carbonate as an electrolyte. Several voltammograms were recorded within the voltage range of +1.5 to −1.8 V with a scan rate of 50 mV/s. A continuous curve was observed for the films at a certain voltage sweep where a random insertion of Li+ occurred reversibly in a definite crystallographic site [WO3 (colourless)+nLi++ne−↔ LinWO3 (blue)]. A dark blue colouration (%T=20–30% in the visible region) was observed under a constant voltage of −1.8 V whereas bleaching occurred at +1.0 V (%T=60–70%), which was studied simultaneously along with the voltage sweep of CV. The colouration time (Tcol) and the bleaching time (Tbl) were almost equal as revealed by the simultaneous study of the second signal (photomultiplier output coupled with the electrochemistry system) during colouration↔bleaching. Coatings of about 500 nm thickness exhibited more that 500 cycles (colouration↔bleaching). The reversibility of the cycle remained good but the intensity of the colouration decreased with the number of cycles. This was possibly due to the structural deformation of WO3 films for its long time exposure to the electrolytic solution. The cathodic current (Ic) and anodic current (Ia) increased with increasing thickness.

주제어

참고문헌 (27)

Adv. Mater. Bange 2 10 1990 10.1002/adma.19900020103

상세보기
Sol. Energy Mater. Sol. Cells Agrawal 31 9 1993 10.1016/0927-0248(93)90003-L

상세보기
SPIE Lynam 823 130 1987 10.1117/12.941881
Solid State Ionics Granqvist 53-56 479 1992 10.1016/0167-2738(92)90418-O

상세보기
Philos. Mag. Deb 27 801 1973 10.1080/14786437308227562

상세보기
Jpn. J. Appl. Phys. Yamanaka 26 1884 1987 10.1143/JJAP.26.1884

상세보기
J. Electrochem. Soc. Meulenkamp 144 1664 1997 10.1149/1.1837657

상세보기
J. Electroanal. Chem. Kikuchi 381 15 1995 10.1016/0022-0728(94)03649-N

상세보기
Electrochim. Acta Li 39 807 1994 10.1016/0013-4686(93)E0003-5

상세보기
Appl. Phys. Lett. Hersh 27 646 1975 10.1063/1.88346

상세보기
Surf. Coat. Technol. Kuypers 74-75 1033 1995 10.1016/0257-8972(95)08294-8

상세보기
Solid State Commun. Beni 70 203 1980
J. Electrochem. Soc. Craigen 1529 1986 10.1149/1.2108960

상세보기
J. Mater. Chem. Judenstein 1 621 1991 10.1039/JM9910100621

상세보기
Sol Gel Sci. Technol. Aegerter 223 1995
Thin Solid Films Ozer 219 193 1992 10.1016/0040-6090(92)90742-T

상세보기
Sol. Energy Mater. Sol. Cells Orel 40 205 1996 10.1016/0927-0248(95)00088-7

상세보기
Mater. Res. Pyper 33 1095 1998 10.1016/S0025-5408(98)00080-4

상세보기
Sol. Energy Mater. Sol. Cells Krings 54 27 1998 10.1016/S0927-0248(97)00220-1

상세보기
Sol. Energy Mater. Sol. Cells Lee 57 21 1999 10.1016/S0927-0248(98)00162-7

상세보기
Electrochim. Acta Bassiere 46 2251 2001 10.1016/S0013-4686(01)00383-8

상세보기
J. Appl. Phys. Kamanaka 20 L307 1981 10.1143/JJAP.20.L307

상세보기
J. Non-Cryst. Solids Vroon 218 189 1997 10.1016/S0022-3093(97)00275-5

상세보기
J. Mater. Soc. Lett. Unuma 5 1248 1986 10.1007/BF01729380

상세보기
J. Non-Cryst. Solids Yanovskaya 124 155 1990 10.1016/0022-3093(90)90258-N

상세보기
Solid State Mater. Sci. Granqvist 16 291 1990 10.1080/10408439008242184

상세보기
J. Chem. Phys. Berkowitz 27 85 1957 10.1063/1.1743722

상세보기

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Optical and electrochromic properties of sol–gel WO3 films on conducting glass

Abstract ▼ AI-Helper

주제어

참고문헌 (27)

이 논문을 인용한 문헌

관련 콘텐츠

원문 URL 링크

이 논문과 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트