Quantum efficiencies of photogeneration in discotic liquid crystals. Part 2: Electric field and temperature dependence

被引：3

作者：

Bunning, JC

Donovan, KJ

Kreouzis, T

Scott, K

Bushby, RJ

Boden, N

Lozman, OR

机构：

[1] Queen Mary Univ London, Dept Phys, London E1 4NS, England

[2] Univ Leeds, SOMS Ctr, Leeds LS2 9JT, W Yorkshire, England

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2003年 / 397卷

关键词：

photogeneration; discotic liquid crystals; time of flight; quantum efficiencies; Onsager Theory;

D O I：

10.1080/15421406390214194

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

DC photoconduction measurements are discussed in Part 1 of this paper as a viable method to deduce the quantum efficiencies of photocarrier production for various Discotic Liquid Crystals. However, high dark currents present in some materials prevent accurate measurement of the photocurrent. This paper describes how the time of flight (TOF) technique can be utilised to overcome this problem. Data for the quantum efficiencies of some DLCs are presented here. Also, a critique of Onsager's Theory of Geminate Recombination is given for the case of its use in DLCs.

引用

页码：563 / 571

页数：9

共 7 条

[1] TRANSIENT PHOTOCONDUCTIVITY IN A DISCOTIC LIQUID-CRYSTAL [J].