Sang Hyuk Im
경희대학교 화학공학과 · 공학
Sang Hyuk Im 교수의 연구실은 나노구조 금속 및 화합물 나노소재의 합성과 응용에 중점을 두고 있으며, 특히 은 나노결정체의 고순도 제조와 Sb₂S₃ 기반 태양전지의 효율성 향상을 위한 신소재 및 공정 기술 개발에 힘쓰고 있습니다. 원자층증착(ALK)과 화학기상증착 등의 정밀한 합성 기법을 활용해 고성능 태양전지 및 전기화학 장치의 핵심 소재를 설계하고 있으며, 비풀러렌 기반 전자수송 물질을 통한 안정성 향상 연구도 진행 중입니다. 연구는 나노재료의 구조 제어와 표면 인터페이스 최적화를 바탕으로 에너지 변환 효율을 극대화하는 데 초점을 맞추고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
One lump or two! Selective etching of twinned seeds, mediated by HCl and the oxygen in air, resulted in high yields of perfect single-crystal silver nanocubes in a range of sizes (30–130 nm). The chloride ion enhances oxidation and prevents aggregation, while the proton decreases the rate of reduction and facilitates etching through the formation of nitric acid.
Sb(2)S(3)-sensitized mesoporous-TiO(2) solar cells using several conjugated polymers as hole-transporting materials (HTMs) are fabricated. We found that the cell performance was strongly correlated with the chemical interaction at the interface of Sb(2)S(3) as sensitizer and the HTMs through the thiophene moieties, which led to a higher fill factor (FF), open-circuit voltage (V(oc)), and short-circuit current density (J(sc)). With the application of PCPDTBT (poly(2,6-(4,4-bis-(2-ethylhexyl)-4H-c
A high-quality Sb₂S₃ thin-absorber with controllable thickness was reproducibly formed by atomic layer deposition (ALD) technique. Compared with conventional chemical bath deposition (CBD), the Sb₂S₃ absorber deposited by ALD did not contain oxide or oxygen impurities and showed a very uniform thickness of Sb₂S₃ absorbers formed on a rough surface of dense blocking TiO₂/F-doped SnOv (bl-TiO₂/FTO) substrate. The planar ALD-Sb₂S₃ solar cells comprised of Au/Poly-3-hexylthiophene/ALD-Sb₂S₃/bl-TiO₂/
Ein Stück oder zwei! Durch selektives Ätzen verzwillingter Keime, das durch HCl und Luftsauerstoff vermittelt wird, sind perfekte einkristalline Silbernanowürfel in hohen Ausbeuten und unterschiedlichen Größen (30–130 nm) zugänglich. Das Chloridion verstärkt die Oxidation und verhindert die Aggregation, das Proton verringert die Reduktionsgeschwindigkeit und erleichtert den Ätzvorgang durch Bildung von salpetriger Säure. Supporting information for this article is available on the WWW under http:
In the present work we report on an investigation of TiO(2) nanotube arrays sensitized by low band-gap materials, such as CdS and CdSe, prepared by the one-step spray pyrolysis deposition method, which is very suitable for mass production, and their performance in photoelectrochemical cells.
Abstract This study reports a new nonfullerene electron transporting material (ETM) based on naphthalene diimide (NDI) small molecules for use in high‐performance perovskite solar cells (PSCs). These solar cells simultaneously achieve high power conversion efficiency (PCE) of over 20% and long‐term stability. New NDI‐ID ( N , N′ ‐Bis(1‐indanyl)naphthalene‐1,4,5,8‐tetracarboxylic diimide) consisting of an N ‐substituted indane group having simultaneous alicyclic and aromatic characteristics is sy
