TY - JOUR
T1 - Temperature measurements of a phosphorescent organic light-emitting diode by Raman spectroscopy
AU - Tsuji, Hiroya
AU - Furukawa, Yukio
N1 - Funding Information:
This work has been carried out at the ‘Center for Practical Chemical Wisdom’ supported by Global COE program of MEXT.
PY - 2010/3/22
Y1 - 2010/3/22
N2 - We have observed the Raman spectrum of an operating phosphorescent organic light-emitting diode fabricated with bis(2-(2′-benzothienyl)-pyridinato-N,C3′)iridium(acetylacetonate) (Btp2Ir(acac)) as a phosphorescent emitter with excitation at 532 nm. All of the observed bands have been attributed to Btp2Ir(acac) because of the resonance Raman effect. We have determined the temperature of the emitting layer containing Btp2Ir(acac) from the ratio of the anti-Stokes to Stokes Raman bands of the 283-cm-1 vibrational mode attributed to Btp2Ir(acac). The temperature of the emitting layer is estimated to be 89 ± 8 °C at a current density of 400 A/m2.
AB - We have observed the Raman spectrum of an operating phosphorescent organic light-emitting diode fabricated with bis(2-(2′-benzothienyl)-pyridinato-N,C3′)iridium(acetylacetonate) (Btp2Ir(acac)) as a phosphorescent emitter with excitation at 532 nm. All of the observed bands have been attributed to Btp2Ir(acac) because of the resonance Raman effect. We have determined the temperature of the emitting layer containing Btp2Ir(acac) from the ratio of the anti-Stokes to Stokes Raman bands of the 283-cm-1 vibrational mode attributed to Btp2Ir(acac). The temperature of the emitting layer is estimated to be 89 ± 8 °C at a current density of 400 A/m2.
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U2 - 10.1016/j.cplett.2010.02.027
DO - 10.1016/j.cplett.2010.02.027
M3 - Article
AN - SCOPUS:77649336058
SN - 0009-2614
VL - 488
SP - 206
EP - 208
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -