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4篇 您的检索式:作者名="DONGKI LEE"
    题名 作者 年代 出处 被引量
1Practical considerations of Si-based anodes for lithiumion battery applications显示文摘Jaegeon Ryu Dongki Hong Hyun-Wook Lee Soojin Park 2017Nano Research2017,10,12:5
2Magnetic compression anastomosis is useful in biliary anastomotic strictures after living donor liver transplantation显示文摘Sung Ill Jang Jie-Hyun Kim Jong Yoon Won Kwang Hoon Lee Hee Wook Kim Jung Whan You Takao Itoi DongKi Lee 2011Gastrointestinal Endoscopy2011,,5:2
3Rapid crystallization-driven high-efficiency phase-pure deep-blue Ruddlesden–Popper perovskite light-emitting diodes显示文摘Perovskite light-emitting diodes(PeLEDs)are considered as promising candidates for nextgeneration solution-processed full-color displays.However,the external quantum efficiencies(EQEs)and operational stabilities of deep-blue(<460 nm)PeLEDs still lag far behind their red and green counterparts.Herein,a rapid crystallization method based on hot-antisolvent bathing is proposed for realization of deep-blue PeLEDs.By promoting immediate removal of the precursor solvent from the wet perovskite films,development of the quasi-two-dimensional(2D)Ruddlesden–Popper perovskite(2D-RPP)crystals with n values>3 is hampered completely,so that phase-pure 2D-RPP films with bandgaps suitable for deep-blue PeLEDs can be obtained successfully.The uniquely developed rapid crystallization method also enables formation of randomly oriented 2D-RPP crystals,thereby improving the transfer and transport kinetics of the charge carriers.Thus,high-performance deep-blue PeLEDs emitting at 437 nm with a peak EQE of 0.63%are successfully demonstrated.The color coordinates are confirmed to be(0.165,0.044),which match well with the Rec.2020 standard blue gamut and have excellent spectral stability.Gyumin Jang Hyowon Han Sunihl Ma Junwoo Lee Chan Uk Lee Wooyong Jeong Jaehyun Son Dongki Cho Ji-Hee Kim Cheolmin Park Jooho Moon 2023Advanced Photonics2023,5,1:1
4Elucidating the photoluminescence-enhancement mechanism in a push-pull conjugated polymer induced by hot-electron injection from gold nanoparticles显示文摘Understanding the photophysical interactions between the components in organic-inorganic nanocomposites is a key factor for their efficient application in optoelectronic devices. In particular, the photophysical study of nanocomposites based on organic conjugated polymers is rare. We investigated the effect of surface plasmon resonance(SPR) of gold nanoparticles(Au NPs) on the photoluminescence(PL) property of a push-pull conjugated polymer(PBDB-T). We prepared the hybrid system by incorporating poly(3-hexylthiophene)-stabilized Au NPs(P3 HT-Au NPs) into PBDB-T. The enhanced and blueshifted PL was observed in the hybrid system compared to PL in a neat PBDB-T system, indicating that the P3 HT chains attached to the Au NPs suppressed charge-transfer from PBDB-T to the Au NPs and relayed the hot electrons to PBDB-T(the band-filling effect).This photophysical phenomenon limited the auto-dissociation of PBDB-T excitons. Thus, the radiative recombination of the excitons occurred more in our hybrid system than in the neat system.DONGKI LEE SE GYO HAN JUNGHO MUN KIHYUK YANG SUNG HYUK KIM JUNSUK RHO KILWON CHO DONGYEOP X.OH MUN SEOK JEONG 2021Photonics Research2021,9,2:0
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