Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Whikun Yi"'
Autor:
Whikun Yi, Jung Won Yoon, Sung Yong Bae, Jae Taek Oh, Sanchari Shome, Koen Bertens, Seul Gi Lim, Bo Ram Lee, Jonghee Yang, Edward H. Sargent, Minseon Kim, Seungjin Lee, Hochan Song, Hyosung Choi
Publikováno v:
ACS Applied Materials & Interfaces. 13:36992-37003
Development of colloidal quantum dot (CQD) inks enables single-step spin-coating of compact CQD films of appropriate thickness, enabling the promising performance of CQD photovoltaics (CQDPVs). Today's highest-performing CQD inks rely on volatile n-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce06e736cf75a28022b3558f5f9d95a8
https://doi.org/10.1021/acsami.1c06352
https://doi.org/10.1021/acsami.1c06352
Autor:
Jonghee Yang, Seong Chan Cho, Seungjin Lee, Jung Won Yoon, Woo Hyeon Jeong, Hochan Song, Jae Taek Oh, Seul Gi Lim, Sung Yong Bae, Bo Ram Lee, Mahshid Ahmadi, Edward H. Sargent, Whikun Yi, Sang Uck Lee, Hyosung Choi
Publikováno v:
ACS nano. 16(1)
Complete surface passivation of colloidal quantum dots (CQDs) and their strong electronic coupling are key factors toward high-performance CQD-based photovoltaics (CQDPVs). Also, the CQD matrices must be protected from oxidative environments, such as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::077ac1025565017a66e8fb9796bf9585
https://pubmed.ncbi.nlm.nih.gov/35025199
https://pubmed.ncbi.nlm.nih.gov/35025199
Publikováno v:
Journal of Nanoscience and Nanotechnology. 19:6358-6362
The encapsulation of single-walled carbon nanotubes (SWNTs) with aliphatic thiol compounds with a relatively small amount of ionization energy achieves n-type doping of SWNTs. Thiol compounds encapsulated inside nanotubes in vacuum drastically change
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5c4d94c31e1daa4ee2489690d979bcc
https://doi.org/10.1166/jnn.2019.17048
https://doi.org/10.1166/jnn.2019.17048
Publikováno v:
Journal of Power Sources. 421:124-131
Though numerous researches regarding the influence of annealing atmospheric condition of ZnO have been carried out, the impact of annealing atmosphere on the carrier transporting properties and the performance of the ZnO-based optoelectronics has not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5344e1d11063074bd27082c202b5bd6
https://doi.org/10.1016/j.jpowsour.2019.03.013
https://doi.org/10.1016/j.jpowsour.2019.03.013
Publikováno v:
Journal of Nanoscience and Nanotechnology. 19:2375-2378
We report field emission (FE) properties of three dimensional single-walled carbon nanotube (3-D SWNT) networks synthesized between ZnO nanorods on textured Si wafer. The FE properties are measured for turn-on field and field enhancement factor, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::144880307c20ce6a94cedd7f22c569e2
https://doi.org/10.1166/jnn.2019.16007
https://doi.org/10.1166/jnn.2019.16007
Autor:
Hochan Song, Jonghee Yang, Danil W. Boukhvalov, Minseon Kim, Whikun Yi, Seunghyun Lee, Hyosung Choi, Jae Taek Oh
Publikováno v:
ACS applied materialsinterfaces. 12(39)
Efficient charge collection in photovoltaics is a key issue toward their high performance. Despite the promising performance of colloidal quantum dot (CQD)-based photovoltaics (CQDPVs), they suffer significant dissipation of photocurrent due to imper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::004bfbeb74c80824267c1a4d0c40c789
https://pubmed.ncbi.nlm.nih.gov/32876435
https://pubmed.ncbi.nlm.nih.gov/32876435
Publikováno v:
Diamond and Related Materials. 89:273-281
C60 molecules are encapsulated inside single-walled carbon nanotubes (SWNTs) and resulting charge (electron) transfer from the SWNTs to the C60s is observed. A Raman upshift in the G-band for the C60-encapsulated SWNTs (C60@SWNTs) is indicative of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::136a6f2c700289e5f8dd7132f4ea1526
https://doi.org/10.1016/j.diamond.2018.09.016
https://doi.org/10.1016/j.diamond.2018.09.016
Publikováno v:
Journal of Nanoscience and Nanotechnology. 18:7043-7046
N-type and p-type single-walled carbon nanotubes (SWNTs) were formed via the encapsulation of tetrathiafulvalene (TTF) and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ) inside SWNTs, respectively. Raman, near-infrared, and X-ray photoelectron spectromet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db43564ac4616792198520bc79d2ab2c
https://doi.org/10.1166/jnn.2018.15492
https://doi.org/10.1166/jnn.2018.15492
Publikováno v:
ACS Applied Materials & Interfaces. 10:25311-25320
Single-layer graphene (SLG) was incorporated into ZnO nanoparticles (NPs), and use of this material in photovoltaic devices generated significant changes. The Fermi level of ZnO NPs underwent a downshift, whereas the conduction and valence bands were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f15e2ac8dbd7c585ccc518c7b65c794c
https://doi.org/10.1021/acsami.8b05556
https://doi.org/10.1021/acsami.8b05556
Autor:
Hyosung Choi, Taehun Park, Junyoung Lee, Sanghun Moon, Jongtaek Lee, Jonghee Yang, Whikun Yi, Suryong Ha
Publikováno v:
Journal of Nanoscience and Nanotechnology. 18:1327-1330
We investigate characteristic field emission properties of methyl ammonium mixed-halide perovskite (CH3NH3PbI3-xClx) and their current change under one laser pulse. To analyze these properties, we fabricated inverted-type mixed-halide perovskite sola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d69cb7dc7ab37be837a86ecae9cdd4b9
https://doi.org/10.1166/jnn.2018.14904
https://doi.org/10.1166/jnn.2018.14904