Simple accurate system for measuring absolute photoluminescence quantum efficiency in organic solid-state thin films

Yuichiro Kawamura; Hiroyuki Sasabe; Chihaya Adachi

doi:10.1143/JJAP.43.7729

Simple accurate system for measuring absolute photoluminescence quantum efficiency in organic solid-state thin films

Yuichiro Kawamura, Hiroyuki Sasabe, Chihaya Adachi

Research output: Contribution to journal › Article › peer-review

236 Citations (Scopus)

Abstract

We accurately measured the absolute photoluminescence (PL) quantum efficiency (ηPL) of organic solid-state thin films using an integrating sphere. We particularly measured the ηPL of conventional organic materials used in organic light emitting diodes, such as a tris(8-quinolionolato) aluminum(III) complex (Alq₃), and a 2 wt%-/fac-tris(2-phenylpyridyl) iridium(III): 4,4′-bis(carbazol-9-yl)-2,2′-biphenyl [Ir(ppy) ₃:CBP] co-deposited film. Alq₃ and Ir(ppy)₃:CBP showed a ηPL = 20 ± 1% and 97 ± 2%, which corresponded well to external electroluminescence efficiency using these materials. We also measured their transient PL decay and determined the radiative rate constants with their ηPL.

Original language	English
Pages (from-to)	7729-7730
Number of pages	2
Journal	Japanese Journal of Applied Physics
Volume	43
Issue number	11 A
DOIs	https://doi.org/10.1143/JJAP.43.7729
Publication status	Published - Nov 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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abstract = "We accurately measured the absolute photoluminescence (PL) quantum efficiency (ηPL) of organic solid-state thin films using an integrating sphere. We particularly measured the ηPL of conventional organic materials used in organic light emitting diodes, such as a tris(8-quinolionolato) aluminum(III) complex (Alq3), and a 2 wt%-/fac-tris(2-phenylpyridyl) iridium(III): 4,4′-bis(carbazol-9-yl)-2,2′-biphenyl [Ir(ppy) 3:CBP] co-deposited film. Alq3 and Ir(ppy)3:CBP showed a ηPL = 20 ± 1% and 97 ± 2%, which corresponded well to external electroluminescence efficiency using these materials. We also measured their transient PL decay and determined the radiative rate constants with their ηPL.",

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AU - Kawamura, Yuichiro

AU - Sasabe, Hiroyuki

AU - Adachi, Chihaya

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Y1 - 2004/11

N2 - We accurately measured the absolute photoluminescence (PL) quantum efficiency (ηPL) of organic solid-state thin films using an integrating sphere. We particularly measured the ηPL of conventional organic materials used in organic light emitting diodes, such as a tris(8-quinolionolato) aluminum(III) complex (Alq3), and a 2 wt%-/fac-tris(2-phenylpyridyl) iridium(III): 4,4′-bis(carbazol-9-yl)-2,2′-biphenyl [Ir(ppy) 3:CBP] co-deposited film. Alq3 and Ir(ppy)3:CBP showed a ηPL = 20 ± 1% and 97 ± 2%, which corresponded well to external electroluminescence efficiency using these materials. We also measured their transient PL decay and determined the radiative rate constants with their ηPL.

AB - We accurately measured the absolute photoluminescence (PL) quantum efficiency (ηPL) of organic solid-state thin films using an integrating sphere. We particularly measured the ηPL of conventional organic materials used in organic light emitting diodes, such as a tris(8-quinolionolato) aluminum(III) complex (Alq3), and a 2 wt%-/fac-tris(2-phenylpyridyl) iridium(III): 4,4′-bis(carbazol-9-yl)-2,2′-biphenyl [Ir(ppy) 3:CBP] co-deposited film. Alq3 and Ir(ppy)3:CBP showed a ηPL = 20 ± 1% and 97 ± 2%, which corresponded well to external electroluminescence efficiency using these materials. We also measured their transient PL decay and determined the radiative rate constants with their ηPL.

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Simple accurate system for measuring absolute photoluminescence quantum efficiency in organic solid-state thin films

Abstract

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