CAJ | 학술논문

新型IPTO( PrTiO3掺杂In2 O3)薄膜的可见光透过率及导电性可与商业化的ITO薄膜媲美。采用双源电子束设备制备了一种新型的IPTO透明导电薄膜,通过开尔文探针法测试,其功函数为5.14 eV。为验证新型IPTO透明导电阳极对有机电致发光器件性能的影响,将IPTO替代商业化ITO作为阳极制备了有机电致发光器件。基于IPTO阳极的器件的亮度最大值为85140 cd/m2,外量子效率最大值为3.16%,分别为以ITO为阳极的器件的3倍及1.13倍。这种性能的改善是由于IPTO具有较小的表面粗糙度及较高的功函数,可以降低阳极的注入势垒,有利于电荷向有机层注入,改善了器件内的空穴及电子的注入平衡。
신형IPTO( PrTiO3참잡In2 O3)박막적가견광투과솔급도전성가여상업화적ITO박막비미。채용쌍원전자속설비제비료일충신형적IPTO투명도전박막,통과개이문탐침법측시,기공함수위5.14 eV。위험증신형IPTO투명도전양겁대유궤전치발광기건성능적영향,장IPTO체대상업화ITO작위양겁제비료유궤전치발광기건。기우IPTO양겁적기건적량도최대치위85140 cd/m2,외양자효솔최대치위3.16%,분별위이ITO위양겁적기건적3배급1.13배。저충성능적개선시유우IPTO구유교소적표면조조도급교고적공함수,가이강저양겁적주입세루,유리우전하향유궤층주입,개선료기건내적공혈급전자적주입평형。
A novel transparent conducting oxide, PrTiO3-doped indium oxide ( IPTO) , is developed via double source reactive electron beam evaporation technology. The film exhibits a high work func-tion of 5. 14 eV and its stability is demonstrated in air for two months. The numerical values of opti-cal and electrical properties of IPTO film and the commercial ITO are similar. Two OLEDs were fab-ricated by employing IPTO and ITO as anode, respectively. For device with IPTO anode, the peak luminance is 85 140 cd/m2 and maximum external quantum efficiency is 3. 16%, which are 3 times and 1. 13 times of the ITO device. It has been demonstrated that the improvements in device per-formance are achieved for the IPTO-anode OLED.