Direct measurement of exciton dissociation energy in polymers

被引：0
|
作者：
Tousek, J. [1 ]
Touskova, J. [1 ]
Chomutova, R. [1 ]
Paruzel, B. [2 ]
Pfleger, J. [2 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, Dept Macromol Phys, V Holesovickach 2, Prague 18200 8, Czech Republic
[2] ASCR, Inst Macromol Chem, Heyrovsky Sq 2, Prague 16206 6, Czech Republic
来源：
AIP ADVANCES | 2017年 / 7卷 / 01期
关键词：
CONJUGATED POLYMERS; BINDING-ENERGIES; LENGTH; P3HT;
D O I：
10.1063/1.4975224
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Exciton dissociation energy was obtained based on the comparison of thickness of the space charge region estimated from the measurement of capacitance of prepared Schottky diode and from the measurement of photovoltage spectra. While the capacitance measurements provide information about the total width of the space charge region (SCR) the surface photovoltaic effect brings information only about the part of the SCR where electric field is sufficiently high to cause dissociation. For determination of the dissociation energy it is sufficient to find the electric potential in the SCR where the process starts. (C) 2017 Author(s).
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页数：6
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