화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터)
권호 28권 1호, p.1346
발표분야 [주제 12] 화학공학일반(부문위원회 발표)
제목 Synthesis of InGaP-Based Core/Shell Quantum Dots Via Position Control of Ga3+
초록 Quantum dots (QDs) are semiconductor particles that have a few nanometers in size, having various optical and electronic properties. Because of their bandgap tunability and narrow emission linewidth, they can be utilized for display area. Especially, InP based QDs are synthesized broadly, including non-heavy metal for luminescence device application. However, InP based QDs have several problems that have low blue light absorption for green emitting region in photoluminescence device and thermodynamically instability in blue emitting region for electroluminescence device. Therefore, we synthesized luminescent blue or green emitting In(Ga)P based QDs via hot injection. incorporation of Ga into InP lattice reduces the lattice mismatch with wider band gap shell materials, making the material less strained. This will be beneficial for reducing the trap centers and suppressing down Auger recombination. In(Ga)P QDs with controlled composition can be well utilized in luminescence device.
저자 이형래, 이도창
소속 KAIST
키워드 재료(Materials)
E-Mail dclee@kaist.edu
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