Magnetic field effect on photocurrent in single layer organic semiconductor devices

B. K. Li; H. T. He; W. J. Chen; M. K. Lam; L. X. Zhang; Kok Wai CHEAH; J. N. Wang

doi:10.1063/1.3666658

Magnetic field effect on photocurrent in single layer organic semiconductor devices

B. K. Li^*, H. T. He, W. J. Chen, M. K. Lam, L. X. Zhang, Kok Wai CHEAH, J. N. Wang

^*Corresponding author for this work

Research output: Chapter in book/report/conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

We systematically studied the magnetic field effect on photocurrent (MPC) in ITO/N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB)/Al sandwich devices as a function of the excitation photon energy and the applied bias voltage. We experimentally identified that the magnetic field induced an increase of intersystem crossing rate between singlet- and triplet- excitons (ISC-X) and a decrease of triplet exciton-polaron quenching rate (TPQ), with ISC-X was a high magnetic field effect and TPQ a low magnetic field one. It was found that the band alignment and carrier transport within the device played an important role in the MPC behaviors.

Original language	English
Title of host publication	Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages	881-882
Number of pages	2
DOIs	https://doi.org/10.1063/1.3666658
Publication status	Published - 2011
Event	30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of Duration: 25 Jul 2010 → 30 Jul 2010

Publication series

Name	AIP Conference Proceedings
Volume	1399
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	30th International Conference on the Physics of Semiconductors, ICPS-30
Country/Territory	Korea, Republic of
City	Seoul
Period	25/07/10 → 30/07/10

Scopus Subject Areas

Physics and Astronomy(all)

User-Defined Keywords

NPB
Organic magnetoresistance
Photocurrent

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10.1063/1.3666658

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Li, B. K., He, H. T., Chen, W. J., Lam, M. K., Zhang, L. X., CHEAH, K. W., & Wang, J. N. (2011). Magnetic field effect on photocurrent in single layer organic semiconductor devices. In Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30 (pp. 881-882). (AIP Conference Proceedings; Vol. 1399). https://doi.org/10.1063/1.3666658

@inproceedings{620c319e3bb2437eb7ac09c746048c97,

title = "Magnetic field effect on photocurrent in single layer organic semiconductor devices",

abstract = "We systematically studied the magnetic field effect on photocurrent (MPC) in ITO/N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB)/Al sandwich devices as a function of the excitation photon energy and the applied bias voltage. We experimentally identified that the magnetic field induced an increase of intersystem crossing rate between singlet- and triplet- excitons (ISC-X) and a decrease of triplet exciton-polaron quenching rate (TPQ), with ISC-X was a high magnetic field effect and TPQ a low magnetic field one. It was found that the band alignment and carrier transport within the device played an important role in the MPC behaviors.",

keywords = "NPB, Organic magnetoresistance, Photocurrent",

author = "Li, {B. K.} and He, {H. T.} and Chen, {W. J.} and Lam, {M. K.} and Zhang, {L. X.} and CHEAH, {Kok Wai} and Wang, {J. N.}",

year = "2011",

doi = "10.1063/1.3666658",

language = "English",

isbn = "9780735410022",

series = "AIP Conference Proceedings",

pages = "881--882",

booktitle = "Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30",

}

Li, BK, He, HT, Chen, WJ, Lam, MK, Zhang, LX, CHEAH, KW & Wang, JN 2011, Magnetic field effect on photocurrent in single layer organic semiconductor devices. in Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30. AIP Conference Proceedings, vol. 1399, pp. 881-882, 30th International Conference on the Physics of Semiconductors, ICPS-30, Seoul, Korea, Republic of, 25/07/10. https://doi.org/10.1063/1.3666658

Magnetic field effect on photocurrent in single layer organic semiconductor devices. / Li, B. K.; He, H. T.; Chen, W. J. et al.

Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30. 2011. p. 881-882 (AIP Conference Proceedings; Vol. 1399).

Research output: Chapter in book/report/conference proceeding › Conference contribution › peer-review

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AU - Li, B. K.

AU - He, H. T.

AU - Chen, W. J.

AU - Lam, M. K.

AU - Zhang, L. X.

AU - CHEAH, Kok Wai

AU - Wang, J. N.

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N2 - We systematically studied the magnetic field effect on photocurrent (MPC) in ITO/N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB)/Al sandwich devices as a function of the excitation photon energy and the applied bias voltage. We experimentally identified that the magnetic field induced an increase of intersystem crossing rate between singlet- and triplet- excitons (ISC-X) and a decrease of triplet exciton-polaron quenching rate (TPQ), with ISC-X was a high magnetic field effect and TPQ a low magnetic field one. It was found that the band alignment and carrier transport within the device played an important role in the MPC behaviors.

AB - We systematically studied the magnetic field effect on photocurrent (MPC) in ITO/N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB)/Al sandwich devices as a function of the excitation photon energy and the applied bias voltage. We experimentally identified that the magnetic field induced an increase of intersystem crossing rate between singlet- and triplet- excitons (ISC-X) and a decrease of triplet exciton-polaron quenching rate (TPQ), with ISC-X was a high magnetic field effect and TPQ a low magnetic field one. It was found that the band alignment and carrier transport within the device played an important role in the MPC behaviors.

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KW - Organic magnetoresistance

KW - Photocurrent

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ER -

Magnetic field effect on photocurrent in single layer organic semiconductor devices

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