Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces

Photoinduced space-charges in organic optoelectronic devices, which are usually caused by poor mobility and charge injection imbalance, always limit the device performance. Here we demonstrate that photoinduced space-charge layers, accumulated at organic semiconductor-insulator interfaces, can also...

Full description

Bibliographic Details
Main Authors:	Laigui Hu, Wei Jin, Rui Feng, Muhammad Zaheer, Qingmiao Nie, Guoping Chen, Zhi-Jun Qiu, Chunxiao Cong, Ran Liu
Format:	Article
Language:	English
Published:	MDPI AG 2018-08-01
Series:	Materials
Subjects:	organic semiconductor organic photodiodes organic optoelectronic devices space-charge insulator layer
Online Access:	http://www.mdpi.com/1996-1944/11/9/1530

id	doaj-art-cac98ad09f5c48efa925497eec5dea84
recordtype	oai_dc
spelling	doaj-art-cac98ad09f5c48efa925497eec5dea842018-08-27T07:26:28ZengMDPI AGMaterials1996-19442018-08-01119153010.3390/ma11091530ma11091530Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor InterfacesLaigui Hu0Wei Jin1Rui Feng2Muhammad Zaheer3Qingmiao Nie4Guoping Chen5Zhi-Jun Qiu6Chunxiao Cong7Ran Liu8School of Information Science and Technology, Fudan University, Shanghai 200433, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaDepartment of Applied Physics, Zhejiang University of Technology, Hangzhou 310023, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaSchool of Information Science and Technology, Fudan University, Shanghai 200433, ChinaPhotoinduced space-charges in organic optoelectronic devices, which are usually caused by poor mobility and charge injection imbalance, always limit the device performance. Here we demonstrate that photoinduced space-charge layers, accumulated at organic semiconductor-insulator interfaces, can also play a role for photocurrent generation. Photocurrent transients from organic devices, with insulator-semiconductor interfaces, were systematically studied by using the double-layer model with an equivalent circuit. Results indicated that the electric fields in photoinduced space-charge layers can be utilized for charge generation and can even induce a photovoltage reversal. Such an operational process of light harvesting would be promising for photoelectric conversion in organic devices.http://www.mdpi.com/1996-1944/11/9/1530organic semiconductororganic photodiodesorganic optoelectronic devicesspace-chargeinsulator layer
institution	Open Data Bank
collection	Open Access Journals
building	Directory of Open Access Journals
language	English
format	Article
author	Laigui Hu Wei Jin Rui Feng Muhammad Zaheer Qingmiao Nie Guoping Chen Zhi-Jun Qiu Chunxiao Cong Ran Liu
spellingShingle	Laigui Hu Wei Jin Rui Feng Muhammad Zaheer Qingmiao Nie Guoping Chen Zhi-Jun Qiu Chunxiao Cong Ran Liu Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces Materials organic semiconductor organic photodiodes organic optoelectronic devices space-charge insulator layer
author_facet	Laigui Hu Wei Jin Rui Feng Muhammad Zaheer Qingmiao Nie Guoping Chen Zhi-Jun Qiu Chunxiao Cong Ran Liu
author_sort	Laigui Hu
title	Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces
title_short	Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces
title_full	Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces
title_fullStr	Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces
title_full_unstemmed	Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces
title_sort	photovoltage reversal in organic optoelectronic devices with insulator-semiconductor interfaces
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2018-08-01
description	Photoinduced space-charges in organic optoelectronic devices, which are usually caused by poor mobility and charge injection imbalance, always limit the device performance. Here we demonstrate that photoinduced space-charge layers, accumulated at organic semiconductor-insulator interfaces, can also play a role for photocurrent generation. Photocurrent transients from organic devices, with insulator-semiconductor interfaces, were systematically studied by using the double-layer model with an equivalent circuit. Results indicated that the electric fields in photoinduced space-charge layers can be utilized for charge generation and can even induce a photovoltage reversal. Such an operational process of light harvesting would be promising for photoelectric conversion in organic devices.
topic	organic semiconductor organic photodiodes organic optoelectronic devices space-charge insulator layer
url	http://www.mdpi.com/1996-1944/11/9/1530
_version_	1612670399288442880

Photovoltage Reversal in Organic Optoelectronic Devices with Insulator-Semiconductor Interfaces

Similar Items