|Table of Contents|

Photoluminescence spectra of thermally activated delayed fluorescence emitter

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2016年04期
Page:
399-
Research Field:
Publishing date:

Info

Title:
Photoluminescence spectra of thermally activated delayed fluorescence emitter
Author(s):
Zhang YangWang WeiChen WeiYang XiaoLi Heng
School of Electronic Engineering and Optoelectronic Technology,Nanjing University of Science and Technology,Nanjing 210094,China
Keywords:
thermally activated delayed fluorescence emitter photoluminescence molecular interaction temperature molecular structure
PACS:
O481.1
DOI:
10.14177/j.cnki.32-1397n.2016.40.04.004
Abstract:
In order to understand the influence of molecular structure and molecular interaction on the light physical processes of the thermally activated delayed fluorescence emitter,photoluminescence spectroscopy of thermally activated delayed fluorescence(TADF)emitter,namely,2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene(4CzIPN)and its derivative,2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene(4CzTPN-Ph)are studied.In 4CzIPN film,the photoluminescence intensity increases unexpectedly when temperature increases at 280K,which is ascribed to be the thermally weakening of molecular interaction.On the contrary,no such phenomenon is observed in 4CzTPN-Ph film.The results indicate that the molecular structure can be modified to adjust to molecular interaction's influence on photoluminescence processes,in order to enhance the efficiency of corresponding light emission diodes.

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Last Update: 2016-06-30