Further analysis of space-charge-limited currents in polybenzo[c]thiophene films

被引：13

作者：

Musa, I ^{[1
]}

Eccleston, W

Higgins, SJ

机构：

[1] Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3BX, Merseyside, England

[2] Univ Liverpool, Dept Chem, Liverpool L69 3BX, Merseyside, England

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 10期

关键词：

D O I：

10.1063/1.367497

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of space-charge-limited currents in polybenzo[c]thiophene (PBCT) films in a sandwich structure of aluminum/PBCT/indium-tin-oxide is presented. Free carrier space-charge-limited currents are identified and the free carrier mobility has been estimated to be similar to 3 x 10(-5) cm(2) V-1 s(-1). A trap of concentration similar to 1.8 x 10(-7) cm(-3) and energy similar to 0.67 eV from the highest occupied molecular orbital level is estimated. The thickness dependence of the current, at constant voltage, is very close to that expected for a space-charge-limited mechanism. The Tauc band gap determined by optical spectrophotometry was found to be similar to 1.34 eV. (C) 1998 American Institute of Physics.

引用

页码：5558 / 5560

页数：3

共 10 条

[1] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].

BURROUGHES, JH ;

BRADLEY, DDC ;

BROWN, AR ;

MARKS, RN ;

MACKAY, K ;

FRIEND, RH ;

BURN, PL ;

HOLMES, AB .

NATURE, 1990, 347 (6293) :539-541

[2] ALL-POLYMER FIELD-EFFECT TRANSISTOR REALIZED BY PRINTING TECHNIQUES [J].

GARNIER, F ;

HAJLAOUI, R ;

YASSAR, A ;

SRIVASTAVA, P .

SCIENCE, 1994, 265 (5179) :1684-1686

[3] Improved preparation of polybenzo[c]thiophene-modified electrodes employing p-toluenesulfonate as dopant anion [J].

Higgins, SJ ;

Jones, C ;

King, G ;

Slack, KHD ;

Petidy, S .

SYNTHETIC METALS, 1996, 78 (02) :155-159

[4] SPACE-CHARGE-LIMITED CURRENTS AS A TECHNIQUE FOR THE STUDY OF IMPERFECTIONS IN PURE CRYSTALS [J].

LAMPERT, MA ;

ROSE, A ;

SMITH, RW .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1959, 8 :464-466

[5] PICOSECOND TRANSIENT PHOTOCONDUCTIVITY IN POLY(P-PHENYLENEVINYLENE) [J].

LEE, CH ;

YU, G ;

MOSES, D ;

HEEGER, AJ .

PHYSICAL REVIEW B, 1994, 49 (04) :2396-2407

[6] A 4-LEVEL ESSENTIAL STATES MODEL OF 3RD-ORDER OPTICAL NONLINEARITY IN PI-CONJUGATED POLYMERS [J].

MAZUMDAR, S ;

GUO, DD ;

DIXIT, SN .

SYNTHETIC METALS, 1993, 57 (01) :3881-3888

[7] Space-charge limited conduction processes in polybenzo[c]thiophene films [J].

Musa, I ;

Higgins, SJ ;

Eccleston, W .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (05) :2288-2290

[8] CHARGE-TRANSPORT IN ORGANIC LIGHT-EMITTING-DIODES - POLARONS OR HOLES [J].

PAASCH, G ;

RIESS, W ;

KARG, S ;

MEIER, M ;

SCHWOERER, M .

SYNTHETIC METALS, 1994, 67 (1-3) :177-180

[9] SPACE-CHARGE-LIMITED CURRENTS IN SINGLE CRYSTALS OF CADMIUM SULFIDE [J].

SMITH, RW ;

ROSE, A .

PHYSICAL REVIEW, 1955, 97 (06) :1531-1537

[10] Electrical characterization of the rectifying contact between aluminium and electrodeposited poly(3-methylthiophene) [J].

Taylor, DM ;

Gomes, HL .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1995, 28 (12) :2554-2568

← 1 →