Cathodoluminescence of CaWO4 and SrWO4 thin films prepared by spray pyrolysis

被引:142
作者
Lou, ZD [1 ]
Cocivera, M [1 ]
机构
[1] Univ Guelph, Dept Chem, Thin Film Semicond Lab, Guelph, ON N1G 2W1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
thin films; chemical synthesis; luminescence;
D O I
10.1016/S0025-5408(02)00851-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thin films of CaWO4 and SrWO4 were prepared on glass substrates by spray pyrolysis. The effects of preparation conditions and monovalent, bivalent and trivalent cation doping on cathodoluminescence (CL) properties of the films were studied. Polycrystalline CaWO4 and SrWO4 films formed a scheelite structure after being annealed above 300degreesC. They exhibited analogous cathodoluminescence consisting of a blue emission band at 447 nm and a blue-green emission band at 487 nm. The blue and blue-green emission intensities increased with substrate and annealing temperature. Annealing atmosphere and doping with Ag+, Pb2+ and La3+ did not influence the characteristics of the blue and blue-green emissions, whereas Eu3+ did. The results indicated both the blue and blue-green emissions originated from the WO42- molecular complex. The luminance and efficiency for CaWO4 film were 150 cd/m(2) and 0.7 lm/W at 5 kV and 57 muA/cm(2). (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1573 / 1582
页数:10
相关论文
共 25 条
[1]   ULTRAVIOLET EMISSION FROM ABO4-TYPE NIOBATES, TANTALATES AND TUNGSTATES [J].
BLASSE, G ;
BRIXNER, LH .
CHEMICAL PHYSICS LETTERS, 1990, 173 (5-6) :409-411
[2]   LOW-TEMPERATURE PHOTOLUMINESCENCE OF STRONTIUM AND BARIUM TUNGSTATE [J].
BLASSE, G ;
SCHIPPER, WJ .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1974, 25 (02) :K163-K165
[3]  
BLASSE G, 1980, STRUCTURE BONDING, V42
[4]  
Butler K. H., 1968, Proceedings of the international conference on luminescence. Vols.1 and 2, P1313
[5]   Vapor-deposited CaWO4 phosphor [J].
Carcia, PF ;
Reilly, M ;
Torardi, CC ;
Crawford, MK ;
Miao, CR ;
Jones, BD .
JOURNAL OF MATERIALS RESEARCH, 1997, 12 (05) :1385-1390
[6]   ROOM-TEMPERATURE PREPARATION OF HIGHLY CRYSTALLIZED LUMINESCENT SRWO4 FILM BY AN ELECTROCHEMICAL METHOD [J].
CHO, WS ;
YASHIMA, M ;
KAKIHANA, M ;
KUDO, A ;
SAKATA, T ;
YOSHIMURA, M .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (11) :3110-3112
[7]   ROOM-TEMPERATURE PREPARATION OF THE HIGHLY CRYSTALLIZED LUMINESCENT CAWO4 FILM BY AN ELECTROCHEMICAL METHOD [J].
CHO, WS ;
YASHIMA, M ;
KAKIHANA, M ;
KUDO, A ;
SAKATA, T ;
YOSHIMURA, M .
APPLIED PHYSICS LETTERS, 1995, 66 (09) :1027-1029
[8]   EFFECT OF HYDROSTATIC-PRESSURE ON VIBRATIONAL PROPERTIES AND STRUCTURE OF SRWO4 AND PBMOO4 [J].
GANGULY, BN ;
NICOL, M .
PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1977, 79 (02) :617-622
[9]   Highly efficient cathodoluminescent phosphors and screens for mid- and high-voltage field emission displays [J].
Goldburt, ET ;
Bolchouchine, VA ;
Levonovitch, BN ;
Sochtine, NP .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1999, 17 (02) :765-768
[10]   Polycrystalline RbTiOPO4 and KTiOPO4 bilayer thin films by spray pyrolysis [J].
Golego, N ;
Cocivera, M .
THIN SOLID FILMS, 1998, 322 (1-2) :14-20