Laser-induced charge separation in organic nanofibers: a joint experimental and theoretical investigation
Laser-induced charge separation in organic nanofibers: a joint experimental and theoretical investigation
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有机纳米纤维中激光诱导电荷分离:联合实验和理论研究
DOI:
10.1016/j.orgel.2017.10.032
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发表时间:
2018
影响因子:
3.2
通讯作者:
Jakob Kjelstrup-Hansen
中科院分区:
文献类型:
--
作者:
Luciana Tavares;Yiming Liu;Dino Behn;Jan Siebels;Tobias Kipp;Alf Mews;Jakob Kjelstrup-Hansen
Charge generation, recombination, and transport in organic semiconductors are fundamental processes that dictate the performance for a range of organic devices. Here we used electrostatic force microscopy combined with laser scanning microscopy to study the carrier distribution in individual organic nanofibers that result from localized illumination: NaT2(5,5′-bis(naphth-2-yl)-2,2′-bithiophene) crystalline nanofibers were illuminated with a continuous wave, focused laser beam with above-band gap photon energy. The localized illumination causes a local negative charge accumulation at the illumination position, while the remaining part of the nanofiber exhibits a positive charge. We propose that this inhomogeneous distribution of photogenerated holes and electrons along the nanofiber axis is due to a surface-trap induced exciton dissociation and the difference in charge carrier mobilities for hole and electrons. We use a one-dimensional, drift-diffusion based model to rationalize the observations and give an improved understanding of the factors governing the charge build-up.
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影响因子:
--
作者:
B. Mukherjee;K. Sim;T. Shin;Junghyun Lee;M. Mukherjee;M. Ree;S. Pyo
通讯作者:
B. Mukherjee;K. Sim;T. Shin;Junghyun Lee;M. Mukherjee;M. Ree;S. Pyo
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Y. Liu;Wei Liu;Yun Sun
通讯作者:
Yun Sun
影响因子:
17.1
作者:
Simbrunner C;Hernandez-Sosa G;Quochi F;Schwabegger G;Botta C;Oehzelt M;Salzmann I;Djuric T;Neuhold A;Resel R;Saba M;Mura A;Bongiovanni G;Vollmer A;Koch N;Sitter H
通讯作者:
Sitter H
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Simone Locci
通讯作者:
Simone Locci
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
H. Najafov;B. Lyu;I. Biaggio;V. Podzorov
通讯作者:
V. Podzorov