TY - JOUR
T1 - Single-layer organic light-emitting diodes using naphthyl diamine
AU - Tse, S. C.
AU - Tsung, K. K.
AU - So, S. K.
N1 - Funding Information:
Support of this research from the Research Committee of HKBU under Grant No. FRG/05-06/II-41 and the Research Grant Council of Hong Kong under Grant No. HKBU/2173/04E is gratefully acknowledged.
PY - 2007/5
Y1 - 2007/5
N2 - N, N′ -diphenyl- N, N′ -bis(1-naphthyl) (1, 1′ -biphenyl)- 4, 4′ diamine (NPB), a common hole transporter, was employed to fabricate single-layer organic light-emitting diodes (OLEDs). With a quasi-Ohmic anode, NPB device exhibited a bulk-limited hole current in the low-voltage region. Electron injection and light emission were clearly observed for applied voltages exceeding 4 V. In order to confine the recombination zone, intentional doping was applied to the single-layer device. After doping with perylene, the luminance and current efficiency of NPB device increased dramatically. It is expected that more efficient single-layer OLEDs can be achieved by using the doping strategy.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in S. C. Tse, K. K. Tsung, S. K. So; Single-layer organic light-emitting diodes using naphthyl diamine. Appl. Phys. Lett. 21 May 2007; 90 (21): 213502. https://doi.org/10.1063/1.2740110 and may be found at https://pubs.aip.org/aip/apl/article/90/21/213502/333637/Single-layer-organic-light-emitting-diodes-using.
AB - N, N′ -diphenyl- N, N′ -bis(1-naphthyl) (1, 1′ -biphenyl)- 4, 4′ diamine (NPB), a common hole transporter, was employed to fabricate single-layer organic light-emitting diodes (OLEDs). With a quasi-Ohmic anode, NPB device exhibited a bulk-limited hole current in the low-voltage region. Electron injection and light emission were clearly observed for applied voltages exceeding 4 V. In order to confine the recombination zone, intentional doping was applied to the single-layer device. After doping with perylene, the luminance and current efficiency of NPB device increased dramatically. It is expected that more efficient single-layer OLEDs can be achieved by using the doping strategy.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in S. C. Tse, K. K. Tsung, S. K. So; Single-layer organic light-emitting diodes using naphthyl diamine. Appl. Phys. Lett. 21 May 2007; 90 (21): 213502. https://doi.org/10.1063/1.2740110 and may be found at https://pubs.aip.org/aip/apl/article/90/21/213502/333637/Single-layer-organic-light-emitting-diodes-using.
UR - http://www.scopus.com/inward/record.url?scp=34249695502&partnerID=8YFLogxK
U2 - 10.1063/1.2740110
DO - 10.1063/1.2740110
M3 - Journal article
AN - SCOPUS:34249695502
SN - 0003-6951
VL - 90
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 21
M1 - 213502
ER -