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Title: Platinum (II) azatetrabenzoporphyrins for near-infrared organic light emitting diodes

Abstract

In this paper, we describe a series of platinum (II) azatetrabenzoporphyrin emitters for near-infrared (NIR) organic light emitting diode (OLED) applications. Platinum (II) aza-triphenyltetrabenzoporphyrin (PtNTBP) results in a 72 nm shift in the photoluminescent (PL) emission spectrum to 842nm compared to 770nm of the platinum (II) tetraphenyltetrabenzoporphyrin (PtTPTBP). Also, the full width at half maximum of the emission spectrum of PtNTBP was significantly narrowed to 27 nm compared to 40nm for PtTPTBP. The multilayer devices fabricated by thermal vacuum evaporation process employing PtTPTBP, PtNTBP, and cis-PtN 2TBP exhibit electroluminescent (EL) emission peak at 770 nm, 848 nm, and 846 nm with the peak external quantum efficiency (EQE) of 8.0%, 2.8%, and 1.5%, respectively. Even with the decrease in EQE of devices employing PtNTBP and cis-PtN 2TBP compared with those employing PtTPTBP, the combination of the spectral narrowing and the bathochromic shift to lower energy EL emission demonstrates the promise of PtNTBP for NIR applications. In the meanwhile, the solution-processed single-layer device using PtNTBP demonstrates the EQE of 0.33% and the peak EL emission at 844 nm.

Authors:
 [1];  [1];  [1];  [1]
  1. Arizona State Univ., Tempe, AZ (United States). Materials Science and Engineering Program
Publication Date:
Research Org.:
Arizona State Univ., Tempe, AZ (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1465953
Alternate Identifier(s):
OSTI ID: 1334365
Grant/Contract Number:  
EE0007090
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 23; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Huang, L., Park, C. D., Fleetham, T., and Li, J. Platinum (II) azatetrabenzoporphyrins for near-infrared organic light emitting diodes. United States: N. p., 2016. Web. doi:10.1063/1.4971363.
Huang, L., Park, C. D., Fleetham, T., & Li, J. Platinum (II) azatetrabenzoporphyrins for near-infrared organic light emitting diodes. United States. doi:10.1063/1.4971363.
Huang, L., Park, C. D., Fleetham, T., and Li, J. Mon . "Platinum (II) azatetrabenzoporphyrins for near-infrared organic light emitting diodes". United States. doi:10.1063/1.4971363. https://www.osti.gov/servlets/purl/1465953.
@article{osti_1465953,
title = {Platinum (II) azatetrabenzoporphyrins for near-infrared organic light emitting diodes},
author = {Huang, L. and Park, C. D. and Fleetham, T. and Li, J.},
abstractNote = {In this paper, we describe a series of platinum (II) azatetrabenzoporphyrin emitters for near-infrared (NIR) organic light emitting diode (OLED) applications. Platinum (II) aza-triphenyltetrabenzoporphyrin (PtNTBP) results in a 72 nm shift in the photoluminescent (PL) emission spectrum to 842nm compared to 770nm of the platinum (II) tetraphenyltetrabenzoporphyrin (PtTPTBP). Also, the full width at half maximum of the emission spectrum of PtNTBP was significantly narrowed to 27 nm compared to 40nm for PtTPTBP. The multilayer devices fabricated by thermal vacuum evaporation process employing PtTPTBP, PtNTBP, and cis-PtN2TBP exhibit electroluminescent (EL) emission peak at 770 nm, 848 nm, and 846 nm with the peak external quantum efficiency (EQE) of 8.0%, 2.8%, and 1.5%, respectively. Even with the decrease in EQE of devices employing PtNTBP and cis-PtN2TBP compared with those employing PtTPTBP, the combination of the spectral narrowing and the bathochromic shift to lower energy EL emission demonstrates the promise of PtNTBP for NIR applications. In the meanwhile, the solution-processed single-layer device using PtNTBP demonstrates the EQE of 0.33% and the peak EL emission at 844 nm.},
doi = {10.1063/1.4971363},
journal = {Applied Physics Letters},
number = 23,
volume = 109,
place = {United States},
year = {2016},
month = {12}
}

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Works referenced in this record:

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