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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/7894

Title: Charge-carrier injection characteristics at organic/organic heterojunction interfaces in organic light-emitting diodes
Authors: Matsushima, Toshinori
Goushi, Kenichi
Adachi, Chihaya
Issue Date: 2007-02-19
Publisher: Elsevier
Magazine name: Chemical Physics letters
Volume: 435
Number: 4-6
Start page: 327
End page: 330
DOI: 10.1016/j.cplett.2007.01.010
Abstract: Organic light-emitting diodes (OLEDs) having various guest molecules doped in an organic host matrix layer are fabricated [the OLED structure is anode/hole-transporting layer (HTL)/guest–host emitting layer/hole-blocking layer/electron-transporting layer/cathode], and the dependence of current density–voltage (J–V) characteristics of the OLEDs on highest occupied molecular orbital (HOMO) levels of guest molecules are investigated. From the J–V characteristics of these OLEDs, we find two important results: (1) J–V characteristics of the OLEDs are controlled by the direct hole injection from the neighboring HTL to guest molecules, and (2) HOMO level alignment between the HTL and guest molecules provides efficient hole injection at this interface.
Rights: NOTICE: This is the author's version of a work accepted for publication by Elsevier. Toshinori Matsushima, Kenichi Goushi, Chihaya Adachi, Chemical Physics letters, 435(4-6), 2007, 327-330, http://dx.doi.org/10.1016/j.cplett.2007.01.010
URI: http://hdl.handle.net/10119/7894
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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