Trap states of tris-8-(hydroxyquinoline) aluminum and naphthyl-substituted benzidine derivative using thermally stimulated luminescence

被引:114
作者
Forsythe, EW [1 ]
Morton, DC
Tang, CW
Gao, YL
机构
[1] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
[2] USA, Res Labs, Adelphi, MD 20783 USA
[3] Eastman Kodak Co, Image Res & Adv Dev, Rochester, NY 14650 USA
[4] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
关键词
D O I
10.1063/1.122173
中图分类号
O59 [应用物理学];
学科分类号
摘要
The bulk trap state properties of a naphthyl-substituted benzidine derivative (NPB) and tris-8-(hydroxyquinoline) aluminum (Alq(3)) have been measured using thermally stimulated luminescence (TSL). The TSL spectra for both organic materials show significant trap distributions over the temperature range from 8 to 300 K. Using a general order TSL expression, the four peaks in NPB were modeled with trap states centered from 0.20 to 0.05 eV. Alq(3) has three TSL peaks over the temperature range, with the peak at 156 K modeled as a distribution of trap states from 0.25 to 0.13 eV. For both materials, the trapping mechanism involves a combination of first and second order emission. NPB and Alq(3) have trap states sufficiently deep to influence the carrier transport and recombination process in bilayer organic based light emitting. (C) 1998 American Institute of Physics.
引用
收藏
页码:1457 / 1459
页数:3
相关论文
共 16 条
  • [1] SPACE-CHARGE-LIMITED CURRENTS IN TETRACENE SINGLE-CRYSTALS
    BAESSLER, H
    HERRMANN, G
    RIEHL, N
    VAUBEL, G
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1969, 30 (06) : 1579 - &
  • [2] ELECTRICAL CONDUCTIVITY OF ORGANIC SOLIDS AT HIGH PRESSURE
    BATLEY, M
    LYONS, LE
    [J]. AUSTRALIAN JOURNAL OF CHEMISTRY, 1966, 19 (02) : 345 - &
  • [3] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS
    BURROUGHES, JH
    BRADLEY, DDC
    BROWN, AR
    MARKS, RN
    MACKAY, K
    FRIEND, RH
    BURN, PL
    HOLMES, AB
    [J]. NATURE, 1990, 347 (6293) : 539 - 541
  • [4] Relationship between electroluminescence and current transport in organic heterojunction light-emitting devices
    Burrows, PE
    Shen, Z
    Bulovic, V
    McCarty, DM
    Forrest, SR
    Cronin, JA
    Thompson, ME
    [J]. JOURNAL OF APPLIED PHYSICS, 1996, 79 (10) : 7991 - 8006
  • [5] ELECTROLUMINESCENCE FROM TRAP-LIMITED CURRENT TRANSPORT IN VACUUM-DEPOSITED ORGANIC LIGHT-EMITTING DEVICES
    BURROWS, PE
    FORREST, SR
    [J]. APPLIED PHYSICS LETTERS, 1994, 64 (17) : 2285 - 2287
  • [6] GLOW CURVES WITH GENERAL ORDER KINETICS
    CHEN, R
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1969, 116 (09) : 1254 - &
  • [7] Chen R., 1981, ANAL THERMALLY STIMU, P159
  • [8] Thermally stimulated luminescence from x-irradiated porous silicon
    Cooke, DW
    Bennett, BL
    Farnum, EH
    Hults, WL
    Muenchausen, RE
    Smith, JL
    [J]. APPLIED PHYSICS LETTERS, 1997, 70 (26) : 3594 - 3596
  • [9] Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode
    Hung, LS
    Tang, CW
    Mason, MG
    [J]. APPLIED PHYSICS LETTERS, 1997, 70 (02) : 152 - 154
  • [10] EVALUATION OF ELECTRON TRAPPING PARAMETERS FROM CONDUCTIVITY GLOW CURVES IN CADMIUM SULPHIDE
    NICHOLAS, KH
    WOODS, J
    [J]. BRITISH JOURNAL OF APPLIED PHYSICS, 1964, 15 (07): : 783 - &