Sang‐Hyun Chin

ORCID: 0000-0002-0963-4777
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Research Areas
  • Perovskite Materials and Applications
  • Solid-state spectroscopy and crystallography
  • Quantum Dots Synthesis And Properties
  • Chalcogenide Semiconductor Thin Films
  • Optical properties and cooling technologies in crystalline materials
  • Fullerene Chemistry and Applications
  • Organic Light-Emitting Diodes Research
  • Magnetism in coordination complexes
  • Luminescence Properties of Advanced Materials
  • Conducting polymers and applications
  • Advanced NMR Techniques and Applications
  • Radical Photochemical Reactions
  • Solid State Laser Technologies
  • Diamond and Carbon-based Materials Research
  • 2D Materials and Applications
  • Luminescence and Fluorescent Materials
  • Semiconductor materials and interfaces
  • Organic Electronics and Photovoltaics

Universitat de València
2020-2024

Yonsei University
2024

Sungkyunkwan University
2023-2024

Parc Científic de la Universitat de València
2021-2024

Institute of Nanotechnology
2023

Jeonbuk National University
2018-2019

Gwangju Institute of Science and Technology
2018-2019

Government of the Republic of Korea
2019

Organic-inorganic metal halide perovskites solar cells (PSCs) have been emerging as a counterpart or supplement of silicon-based cells. They shown various interesting optoelectronic properties and impressive power conversion efficiencies, even outperforming the theoretical limits in tandem configurations. However, challenges such long-term stability scalable manufacturing remain significant obstacles to commercialization. Key factors like material composition crystal quality are essential...

10.1016/j.nxmate.2023.100103 article EN cc-by-nc-nd Next Materials 2024-01-09

Organic–inorganic lead halide perovskite is emerging as a potential emissive material for light emitting devices, such as, diodes (LEDs) and lasers, which has emphasized the necessity of understanding its fundamental opto-physical properties. In this work, temperature-dependent photoluminescence CH3NH3PbBr3 quantum dots (QDs), polycrystalline thin film (TF), single crystal (SC) been studied. The optophysical properties, exciton–phonon scattering, exciton binding energy, decay dynamics, were...

10.1021/acs.jpclett.8b01593 article EN The Journal of Physical Chemistry Letters 2018-07-05

Abstract Metal halide perovskites are promising semiconductors with applications in optoelectronic and photonic technologies. When coherent emission targeted, materials lower lasing thresholds increased stabilities must be developed to increase the performance under continuous wave optical pumping condition finally allow realization of long sought‐after electrically pumped lasers. Perovskite multiple‐quantum‐wells (MQWs) can potentially ease population inversion by confining photoexcitation...

10.1002/adom.202302701 article EN cc-by-nc-nd Advanced Optical Materials 2024-02-22

Metal halide perovskite-based photovoltaics and light-emitting diodes (LEDs) have exhibited a promising trajectory toward commercial viability, nearing the performance levels of them to commercially established materials. A particularly encouraging avenue involves tailoring various dimensions perovskite materials, notably through implementation multiple quantum wells (MQWs), amplify their potential in optoelectronic applications. This comprehensive review delves into recent breakthroughs...

10.47852/bonviewjopr42022936 article EN Deleted Journal 2024-07-09

The photo-physical properties of halide perovskite films, photoluminescence intensity, and emission peak are controlled through solvent vapour annealing.

10.1039/c8nr09947b article EN Nanoscale 2019-01-01

Abstract Quasi-two-dimensional (quasi-2D) perovskites are increasingly explored for integration into light-emitting diodes (LEDs) as light-emissive layers. However, the quasi-2D perovskite films likely exhibit non-uniform dimensional phase distribution and irregular internal crystal structures. These characteristics known to contribute undesirable effects, including non-radiative recombination losses radiative in of various dimensions, impeding realization efficient electroluminescence high...

10.1088/2515-7655/ad4591 article EN cc-by Journal of Physics Energy 2024-04-30

To design molecular spin qubits with enhanced quantum coherence, a control of the coupling between local vibrations and states is crucial, which could be realized in principle by engineering structures via coordination chemistry. this end, understanding underlying structural factors that govern relaxation central topic. Here, we report investigation dynamics series chemically designed europium(II)-based endohedral metallofullerenes (EMFs). By introducing unique difference, i. e. metal-cage...

10.1002/chem.202101922 article EN Chemistry - A European Journal 2021-07-16

Metal halide perovskites have emerged as a promising group of materials for optoelectronic applications such photovoltaics, light emission, and photodetectors. So-far, in particular, the stability light-emitting devices is limited, which part attributed to intrinsic ionic conductivity these materials. High-performance inevitably contain heterojunctions similar other based on oxide perovskites, II–VI, or III–V semiconductors. To enable efficient heterojunctions, ion exchange at interface...

10.1021/acsphotonics.2c00604 article EN cc-by ACS Photonics 2022-07-07

Interstitial doping has been considered as an effective strategy to passivate and immobilize the ionic defects of metal halide perovskites enhance performance stability perovskite solar cells. However, high dopant dosage causes lattice distortion which results in micro-strain subsequent phase destabilization. This highlight discusses latest report regarding optimal interstitial with a multivalent alkali cation for awaiting issues associated it.

10.26599/nre.2023.9120071 article EN cc-by Deleted Journal 2023-05-08

Abstract Organic light‐emitting diodes have a huge gain in popularity over the past 25 years for display and lighting applications, but production of low‐cost efficient devices remains challenge. OLEDs using sub‐nanometer undoped emissive layers are route to fabricate cost‐effective but, as they inherently thin, it opens issues with variation thickness shunting paths. At same time, lead chloride perovskites currently being investigated charge transport materials owing their wide bandgap,...

10.1002/adom.202401061 article EN cc-by-nc-nd Advanced Optical Materials 2024-07-11

Abstract Halide perovskites (HPs) are rising semiconductors in optoelectronics, such as photovoltaic and light-emitting applications. However currently, laser diode with HPs is still not realized yet. When coherent emissions targeted the applications, materials lower lasing thresholds increased stabilities must be ensured to realize device. Perovskite multiple-quantum-wells (MQWs) can potentially ease population inversion by confining photoexcitation, but there several more progress on...

10.1007/s42452-024-06088-6 article EN cc-by Deleted Journal 2024-07-22

Efficient emission from lead bromide in polyethylene glycol is tuned orange to green by alkylammonium salts, which influence the particular complex formation.

10.1039/d0tc04057f article EN Journal of Materials Chemistry C 2020-01-01

Metal halide perovskites have emerged as highly promising materials for a range of optoelectronic applications. However, their sensitivity to environmental factors, particularly air moisture, presents significant challenges both reliable research and commercialization. Moisture-induced degradation is major issue due the ionic nature perovskites, which significantly impacts luminescent properties. Despite extensive efforts focusing on device applications, comprehensive understanding...

10.1039/d4ra07548j article EN cc-by RSC Advances 2024-01-01

The optoelectric applications, light emitters and photovoltaics, with organometallic halide perovskite materials have been decided by dynamics of charge carriers in grains on the polycrystalline thin films. Especially, polar solvent vapour recrystallizes perovskites changes their grain sizes. In this paper, various solvents were evaluated density functional theory calculation. And a stociometric treatment these which enhanced photoluminescence intensity was established. properties caused...

10.48550/arxiv.1803.10938 preprint EN other-oa arXiv (Cornell University) 2018-01-01

To design molecular spin qubits with enhanced quantum coherence, a control of the coupling between local vibrations and states is crucial, which could be realized in principle by engineering structures via coordination chemistry. this end, understanding underlying structural factors that govern relaxation central topic. Here, we report investigation dynamics series chemically-designed europium(II)-based endohedral metallofullerenes (EMFs). By introducing unique difference, i.e. metal-cage...

10.48550/arxiv.2106.03633 preprint EN cc-by arXiv (Cornell University) 2021-01-01
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