[15a-1G-1~10] 12.4 Organic light-emitting devices and organic transistors

[15a-1G-8] Measurement of carrier mobility for multi-layered organic light-emitting diodes

〇Hajime Okumoto^1,2, Hiroshi Ohata², Yoshiyuki Kitago², Tomoaki Kubo², Satoshi Miyaguchi², Tetsuo Tsutsui² (1.AIST, 2.CEREBA)

Keywords:OLED,carrier transport,carrier mobility

Charge carrier mobility of transport layers critically determines characteristics of organic light-emitting diodes (OLEDs). The estimation of the carrier mobility of a target transport layer is needed to examine real correlation between the device characteristics and the mobility in working conditions. The complex multilayered structure, however, has prevented such measurement for OLEDs. We will propose and demonstrate a new method to estimate carrier mobility of a target transport layer even in multilayered structures of OLEDs.