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 proceeding › 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

User-Defined Keywords

NPB
Organic magnetoresistance
Photocurrent

Access to Document

10.1063/1.3666658

Cite this

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 proceeding › peer-review

TY - GEN

T1 - Magnetic field effect on photocurrent in single layer organic semiconductor devices

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.

PY - 2011

Y1 - 2011

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.

KW - NPB

KW - Organic magnetoresistance

KW - Photocurrent

UR - http://www.scopus.com/inward/record.url?scp=84862811079&partnerID=8YFLogxK

U2 - 10.1063/1.3666658

DO - 10.1063/1.3666658

M3 - Conference proceeding

AN - SCOPUS:84862811079

SN - 9780735410022

T3 - AIP Conference Proceedings

SP - 881

EP - 882

BT - Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30

T2 - 30th International Conference on the Physics of Semiconductors, ICPS-30

Y2 - 25 July 2010 through 30 July 2010

ER -

Magnetic field effect on photocurrent in single layer organic semiconductor devices

Abstract

Publication series

Conference

User-Defined Keywords

Access to Document

Other files and links

Fingerprint

Cite this