경희대학교 · 공학
Ramchandra Pode 교수의 연구실은 유기 발광 소자 및 투명 전도성 전극 기반의 고성능 플랫 테크놀로지 개발에 주력하고 있습니다. 특히 탑형 발광 OLED의 안정성 향상과 내구성 향상을 위한 신소재 전극, 복합 도핑을 통한 레드 phosphor 개발, 그리고 환경적 스트레스에 대한 내성 향상 기술이 핵심 연구 방향입니다. 다양한 합성 방법(진공 증착, 연소법 등)을 활용해 광학적·전기적 특성이 뛰어난 나노구조 재료를 설계하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
We have fabricated a transparent conducting double-layer metal electrode for top emission organic light-emitting devices which consists of thin layers of Ca and Ag metals of different thicknesses, deposited by the vacuum evaporation technique. The process is clean and does not damage the underlaying organic layers. High optical transparency over 70%, low reflectivity (14%) in the visible region, and low electrical sheet resistance (12 ohms/square) in Ca(10 nm)–Ag(10 nm) structures are reported.
Luminescence of Bi3+ and Bi3+ + Eu3+ in calcium tungstate powder prepared by the solid state diffusion method has been reported. The excitation and emission bands in CaWO4 and CaWO4:Bi3+ coincide and appear at 256 and 430.5 nm, respectively. The 430.5 nm emission band is ten times stronger in the latter case (for 1 mol% Bi3+) than in the former case. The Eu3+ emission was observed at 619 nm in CaWO4:Eu3+ (1 mol%). The Eu3+ emission intensity increased significantly (about 37 times) with the addi
Doubly doped YVO4:Pb2+, Eu3+ red phosphor materials with fixed Eu3+ concentration (5 mol%) and varying Pb2+ concentration were prepared via a self-propagating (combustion) synthesis. This consisted of bringing a saturated aqueous solution of the desired metal salts and a suitable organic fuel to the boil, until the mixture ignited and a self-sustaining and rather fast combustion reaction initiated, resulting in dry, amorphous or usually crystalline fine particles of the desired material. The for
