고려대학교 · Engineering
Min Ju Cho 교수의 연구실은 유기 반도체 소재 및 장치의 핵심 기초 연구를 중심으로, 특히 유기 태양전지, 유기 전계효과 트랜지스터, 유기 발광 다이오드(OLED) 등 유기 에너지 장치의 성능 향상을 목표로 합니다. 다양한 전자 구조를 가진 고분자 및 분자 소재를 설계·합성하여, 전하 이동성 향상, 광흡수 특성 최적화, 광발광 효율 증대 등 응용 가능성을 극대화하는 데 중점을 두고 있습니다. 특히, 용액 공정성과 고순도 결정성 나노소재를 접목한 고성능 유기 전자소자 개발이 핵심 연구 방향입니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract Three new color‐tunable (deep‐blue to sky‐blue) and solution‐processable emitters—9′‐(2,12‐di‐ tert ‐butyl‐5,9‐dioxa‐13 b ‐boranaphtho[3,2,1‐ de ]anthracen‐7‐yl)‐9′ H ‐9,3′:6′,9″‐tercarbazole ( TB‐3Cz) , 9′‐(2,12‐di‐ tert ‐butyl‐5,9‐dioxa‐13 b ‐boranaphtho[3,2,1‐ de ]anthracen‐7‐yl)‐9,9″‐diphenyl‐9 H ,9′ H ,9″ H ‐3,3′:6′,3″‐tercarbazole ( TB‐P3Cz) , and 9‐(2,12‐di‐ tert ‐butyl‐5,9‐dioxa‐13 b ‐boranaphtho[3,2,1‐ de ]anthracen‐7‐yl)‐ N 3 , N 3 , N 6 , N 6 ‐tetraphenyl‐9 H ‐carbazole‐3,6‐d
Template-guided solution-shearing (TGSS) is used to fabricate field-effect transistors (FETs) composed of micropatterned prisms as active channels. The prisms comprise highly crystalline PTDPP-DTTE, in which diketopyrrolopyrrole (DPP) is flanked by thiophene. The FET has a maximum mobility of approximately 7.43 cm(2) V(-1) s(-1) , which is much higher than the mobility values of the thin-film transistors with solution-sheared or spin-coated films of PTDPP-DTTE annealed at 200 °C.
We synthesized a novel fully conjugated block copolymer, P3, in which a wide-band gap donor block (P1) was connected to a narrow-band gap acceptor block (P2). As P3 contains P1 block with a wide bandgap and P2 block with a narrow bandgap, it exhibits a very wide complementary absorption. Transient photoluminescence measurement using P3 dilute solution demonstrated intramolecular charge transfer between the P1 block and the P2 block, which was not observed in a P1/P2 blend solution. A P3 thin fil
In this work, three-armed luminogens IAcTr-out and IAcTr-in were synthesized and used as emitters bearing triazine and indenoacridine moieties in thermally activated delayed fluorescence organic light-emitting diodes (OLEDs). These molecules could form a uniform thin film via the solution process and also allowed the subsequent deposition of an electron transporting layer either by vacuum deposition or by an all-solution coating method. Intriguingly, the new luminogens displayed aggregation-indu
Recently, all-polymer solar cells (all-PSCs) have made significant progress in terms of efficiency and performance. Using Y-series-based small-molecule acceptors, a new range of polymer acceptors for all-PSC has been developed. These synthesized polymer acceptors have a low band gap, broad absorption, and easily tunable energy levels, making them suitable n-type candidates for efficient all-PSCs. In this review, we summarize some molecular design and synthesis strategies used to advance the fiel
The first demonstration of polymer nanowire (PNW) crystals based on a diketopyrrolopyrrole-based copolymer (i.e., PDTTDPP), and their application to field-effect transistors (FETs) is reported. Remarkably, transmission electron microscopy and selected area electron diffraction analyses of the PNW reveal its single-crystalline (SC) nature. FETs fabricated of a SC PNW exhibit a maximal charge carrier mobility of ≈7.00 cm(2) V(-1) s(-1) , which is almost one order of magnitude higher than that of t
New M- and V-shaped perylene diimide (PDI)-based small molecules were synthesized as new n-type acceptors for nonfullerene-based polymer solar cells.
In this study, we demonstrated two deep-blue TADF emitters, BO-tCzPhICz and BO-tCzDICz, for solution-processable thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs). They were synthesized by employing an organoboron acceptor and 9-(3,6-di-<i>tert</i>-butyl-9<i>H</i>-carbazol-9-yl)-5-phenyl-5,12-dihydroindolo[3,2-<i>a</i>]carbazole (tCzPhICz) and 12-(3,6-di-<i>tert</i>-butyl-9<i>H</i>-carbazol-9-yl)-15<i>H</i>-diindolo[2,3-<i>b</i>:1',2',3'-<i>lm</i>]carbazole (tCz
New host molecules such as 9-(6-(9H-carbazol-9-yl)pyridin-3-yl)-6-(9H-carbazol-9-yl)-9H-pyrido[2,3-b]indole (pPCB2CZ) and 9-(6-(9H-carbazol-9-yl)pyridin-2-yl)-6-(9H-carbazol-9-yl)-9H-pyrido[2,3-b]indole (mPCB2CZ) were designed and synthesized for blue phosphorescent organic light-emitting diodes (PhOLEDs). The glass transition temperatures of two host molecules were measured higher than 120 °C, and the identical triplet energies were determined to be 2.92 eV for both molecules. The bis(3,5-diflu
We synthesized two types of novel poly(3-alkylthiophene)-free (D)<sub>n</sub>-<italic>b</italic>-(A)<sub>m</sub> conjugated block copolymers: PTQI-<italic>block</italic>-PNDISs.
A new side-chain polymer (X-TPACz) bearing hole-transporting pendant groups accompanying a thermally crosslinkable entity was synthesized using N-([1,1'-biphenyl]-4-yl)- N-(4-(9-(4-vinylbenzyl)-9 H-carbazol-3-yl)phenyl)bicyclo[4.2.0]octa-1(6),2,4-trien-3-amine (6) via addition polymerization. The X-TPACz could be spontaneously crosslinked without using any further reagents and showed a good film-forming property upon low-temperature thermal treatment. The thermal curing temperature for the X-TPA
A light-emitting molecular triad (BPCP-2CPC) with dual functionality was successfully synthesized and applied to solution-processed non-doped organic light-emitting diodes. The BPCP-2CPC triad contains 9-phenyl-9H-carbazole units as a host moiety tethered to a green-emitting core (BPCP) through a cyclohexane unit and exhibits thermally activated delayed fluorescence (TADF) and aggregation-induced emission (AIE) characteristics simultaneously. The BPCP-2CPC-based non-doped TADF-OLED devices showe
