Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Hee Suk Roh"'
Publikováno v:
Nano Research. 12:3089-3094
The effect of the residual thermal stress of NiO films on the performance of an inverted type perovskite solar cell was studied. In this study, NiO films were grown on fluorine doped tin oxide (FTO) substrates of different surface roughness by therma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22301de3b74e6e486b9a6ed92f5f8368
https://doi.org/10.1007/s12274-019-2556-8
https://doi.org/10.1007/s12274-019-2556-8
Publikováno v:
Journal of the European Ceramic Society. 39:1854-1859
We studied crystallization, grain growth and electric properties of La0.8Sr0.2MnO3 (LSM) ceramics which were produced using the microwave-treatment. While co-precipitated nanoparticles remain mainly amorphous, the microwave irradiated particles are c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f34b9d209273a96a6eb1d864afd9309
https://doi.org/10.1016/j.jeurceramsoc.2018.12.050
https://doi.org/10.1016/j.jeurceramsoc.2018.12.050
Publikováno v:
Journal of Alloys and Compounds. 772:573-578
Eu3+-doped strontium phosphorous silicate phosphors were synthesized at 200 °C using microwave-assisted reaction and their crystal structure and optical properties were investigated. Cation/anion ratio and SiO4 content in strontium phosphorous silic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c48ce6a7f5dbed1b6e090879dee21fe6
https://doi.org/10.1016/j.jallcom.2018.09.151
https://doi.org/10.1016/j.jallcom.2018.09.151
Publikováno v:
ACS Applied Nano Materials. 1:4483-4490
Oxide red nanophosphors convert high-energy photons to red light and have potential applications in photonic devices, including fluorescent lamps, light-emitting devices, and biosensors. In this study, a series of OH–-substituted Sr5(PO4)3Cl:Eu3+ n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4348448f7b91d4db4191b2521c9091fd
https://doi.org/10.1021/acsanm.8b00754
https://doi.org/10.1021/acsanm.8b00754
Publikováno v:
Solar Energy. 167:251-257
This study compares the photovoltaic performance of perovskite solar cells PSCs which use different types of TiO2 mesoporous scaffold; nanoparticle (NP) film and nanorod (NR) array. In PSCs of TiO2 NRs, the hysteresis of current density–voltage (J-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29e59f11c85e7fe20e18d4a96622b598
https://doi.org/10.1016/j.solener.2018.04.009
https://doi.org/10.1016/j.solener.2018.04.009
Autor:
Seongha Lee, Gill Sang Han, Jung-Kun Lee, Sang-Hyun Kim, Sung Woo Choi, Hee Suk Roh, Chulsoo Yoon
Publikováno v:
Journal of Power Sources. 389:135-139
Degradation of hybrid lead halide perovskite by UV light is a crucial issue that limits the commercialization of lead halide perovskite solar cells (PSCs). To address this problem, phosphor-in-glass (PiG) is used to convert UV to visible light. Down-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30e8c34d17984a529f54943eb23db62c
https://doi.org/10.1016/j.jpowsour.2018.04.026
https://doi.org/10.1016/j.jpowsour.2018.04.026
Publikováno v:
Materials Science and Engineering: B. 260:114637
We report the electrochemical properties of MnO2–NiO mixture layer that is coated on highly conductive SnO2 nanowires. In this study, the effect of the nanowire conductivity and coating composition on the pseudocapacitic performance was systematica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b1bf6e1ac5768c433eff195d9bc5d46
https://doi.org/10.1016/j.mseb.2020.114637
https://doi.org/10.1016/j.mseb.2020.114637
Publikováno v:
Nano Convergence
Stable hydrophobic nanocomposites of magnetic nanoparticles and clay are prepared by the self-assembly of magnetite (Fe3O4) nanoparticles on surfaces of exfoliated clay platelets. Due to the attractive interaction between hydrophobic groups, oleic ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5880b42b102417ca7486c06b2b4c4820
https://doi.org/10.1186/s40580-017-0116-z
https://doi.org/10.1186/s40580-017-0116-z
Autor:
Sangbaek Park, Kug Sun Hong, Dong Wan Kim, Hee Jo Song, Jae Chan Kim, Hee Suk Roh, Chan Woo Lee
Publikováno v:
Materials Characterization. 96:13-20
Nano-sized anatase TiO2 was synthesized using surfactant-free hydrolysis method by controlling the ratio of anions in solution. The particle sizes of TiO2 were systematically tuned by the molar ratio of the Ti4 + precursors (chlorides and sulfates).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e68e9bb0b4db8c291fbde1d64296c5b
https://doi.org/10.1016/j.matchar.2014.07.005
https://doi.org/10.1016/j.matchar.2014.07.005
Publikováno v:
Ceramics International. 39:9791-9795
Ca 15 (PO 4 ) 2 (SiO 4 ) 6 :Eu 2+ ,Ce 3+ phosphor was synthesized by a solid-state reaction. Doping of Ce 3+ into the Ca 2+ site of the Ca 15 (PO 4 ) 2 (SiO 4 ) 6 :Eu 2+ phosphor enhanced the Eu 2+ emission greatly, as observed by measuring the photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72ffc6599227bd31b898b3aa235e5f7f
https://doi.org/10.1016/j.ceramint.2013.05.048
https://doi.org/10.1016/j.ceramint.2013.05.048