JAIST Repository >
School of Materials Science >
Articles >
Journal Articles >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10300

Title: Improved initial drop in operational lifetime of blue phosphorescent organic light emitting device fabricated under ultra high vacuum condition
Authors: Yamamoto, H.
Brooks, J.
Weaver, M. S.
Brown, J. J.
Murakami, T.
Murata, H.
Keywords: OLED
ultra high vacuum
blue phosphorescence
Issue Date: 2011-07-18
Publisher: American Institute of Physics
Magazine name: Applied Physics Letters
Volume: 99
Number: 3
Start page: 033301-1
End page: 033301-3
DOI: 10.1063/1.3610998
Abstract: A blue phosphorescent organic light emitting device fabricated under the ultra high vacuum (UHV) condition of 6.5 × 10^<−7> Pa decreases the initial luminance drop upon lifetesting under a constant dc current of 15 mA/cm^2 by 3 times compared to a device fabricated under a high vacuum (HV) condition of 7.6 × 10^<−6> Pa resulting in a 23% increase in half lifetime. We calculate a water content of 10^<−4> mol. % in the UHV device emissive layer (EML) and 10^<−2> mol. % in the HV device EML. We discuss the effects of water on luminance loss and voltage rise for the devices.
Rights: Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in H. Yamamoto, J. Brooks, M. S. Weaver and J. J. Brown, T. Murakami and H. Murata, Applied Physics Letters, 99(3), 033301 (2011) and may be found at http://link.aip.org/link/doi/10.1063/1.3610998
URI: http://hdl.handle.net/10119/10300
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

Files in This Item:

File Description SizeFormat
17481.pdf170KbAdobe PDFView/Open

All items in DSpace are protected by copyright, with all rights reserved.


Contact : Library Information Section, Japan Advanced Institute of Science and Technology