Výsledky vyhledávání

Ultrafast Photocarrier Dynamics at the p–n Junction in Cu(In,Ga)Se2 Solar Cell with Various Zn(O,S) Buffer Layers Measured by Optical Pump–Terahertz Probe Spectroscopy

Autor: Woo-Jung Lee, Yong-Duck Chung, Jung Min Bae, Dae-Hyung Cho, Won Seok Han, Jae-Hyung Wi, Jaehun Park, Hye-Jung Yu

Publikováno v: ACS Applied Energy Materials. 1:522-530

We fabricated Cu(In,Ga)Se2 (CIGS) solar cells with three types of Zn(O,S) buffer layer produced by different techniques: S thermal cracking, chemical bath deposition (CBD), and reactive sputtering. The highest cell efficiency was obtained from the CI

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53b083b777a3f2ca5b7c302d3eb6ebb6
https://doi.org/10.1021/acsaem.7b00127

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Spectral Response of CuGaSe2/Cu(In,Ga)Se2 Monolithic Tandem Solar Cell With Open-Circuit Voltage Over 1 V

Autor: Won Seok Han, Chae-Woong Kim, Yong-Duck Chung, Chang-Il Kim, Jae Ho Yun, Dae-Hyung Cho, Chaehwan Jeong, Hye-Jung Yu, Woo-Jung Lee, Jae-Hyung Wi

Publikováno v: IEEE Journal of Photovoltaics. :1-9

Thin-film multijunction solar cells are considered to be the most promising structure for next-generation photovoltaic devices. We fabricated CuGaSe2 (CGS)/Cu(In,Ga)Se2 (CIGS) monolithic tandem solar cells. The intermediate AZO film was used as a rec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1780c01a6f8de871cad921b31cb4a2f8
https://doi.org/10.1109/jphotov.2018.2799168

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Behavior of Photocarriers in the Light-Induced Metastable State in the p-n Heterojunction of a Cu(In,Ga)Se2 Solar Cell with CBD-ZnS Buffer Layer

Autor: Jisu Yoo, Won Seok Han, Jae Hyung Wi, Woo Jung Lee, Hye Jung Yu, Yeonjin Yi, Dae-Hyung Cho, Yong-Duck Chung, Jung-Hoon Song

Publikováno v: ACS Applied Materials & Interfaces. 8:22151-22158

We fabricated Cu(In,Ga)Se2 (CIGS) solar cells with a chemical bath deposition (CBD)-ZnS buffer layer grown with varying ammonia concentrations in aqueous solution. The solar cell performance was degraded with increasing ammonia concentration, due to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbe4bd89854bae638b4c3a728e571edf
https://doi.org/10.1021/acsami.6b05005

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Light-soaking effects and capacitance profiling in Cu(In,Ga)Se2 thin-film solar cells with chemical-bath-deposited ZnS buffer layers

Autor: Jae-Hyung Wi, Dae-Hyung Cho, Tae-Soo Kim, Hye-Jung Yu, Won Seok Han, Yong-Duck Chung, Jung-Hoon Song, Woo-Jung Lee

Publikováno v: Physical Chemistry Chemical Physics. 18:33211-33217

We fabricated Cu(In,Ga)Se2 (CIGS) solar cells with chemical-bath deposited (CBD) ZnS buffer layers with different deposition times. The conversion efficiency and the fill factor of the CIGS solar cells reveal a strong dependence on the deposition tim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1a40c3cbbb4da1e1bd6f7b3f4a7e58e
https://doi.org/10.1039/c6cp05306h

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Effect of p-AlGaN electron blocking layers on the injection and radiative efficiencies in InGaN/GaN light emitting diodes

Autor: Tae-Soo Kim, Yanqun Dong, Hye-Jung Yu, Nan-Cho Oh, Jung-Hoon Song, Jin-Gyu Lee

Publikováno v: Current Applied Physics. 15:S7-S10

The effect of electron blocking layer (EBL) on the injection and radiative efficiencies in InGaN/GaN multiple quantum well (MQW) light-emitting diodes (LEDs) was investigated. In order to identify the dominant mechanism, we measured the external quan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88f3266ff80205325a555fb694d9d0b5
https://doi.org/10.1016/j.cap.2015.04.018

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Determination of current-crowding effects on loss of light-output power in InGaN/GaN blue-light-emitting diodes

Autor: Jung-Hoon Song, Yanqun Dong, Hye-Jung Yu, Jin-Gyu Lee, Tae-Soo Kim, Nan-Cho Oh

Publikováno v: Journal of the Korean Physical Society. 67:346-349

We analyzed the current-crowding process and its effects on carrier spill-over and light outputpower loss in InGaN/GaN blue-light-emitting diodes. When the current density was measured to be 3.1 times larger, the carrier spill-over was observed to be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d0ca8877b6d2ae5657598fbbb5582ba
https://doi.org/10.3938/jkps.67.346

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Akademický článek

Medical Complexity of Children with Special Healthcare Needs and Healthcare Experiences

Autor: Hye-Jung Yun, M. L. Parker, Cynthia B. Wilson, Ming Cui

Publikováno v: Children, Vol 11, Iss 7, p 775 (2024)

The rising prevalence of CSHCN has led to significant challenges for caregivers, particularly mothers, who face difficulties from caregiving demands and managing complex healthcare interactions. The objective of this study was to examine the associat

Externí odkaz: https://doaj.org/article/62027a7f55d04995b94209b5a571d81f

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A Comparative Study on Professional Qualification Factors of Archivists and Records Managers

Autor: Yeon-Kyoung Chung, Hye-Jung Yu

Publikováno v: Journal of the Korean BIBLIA Society for library and Information Science. 23:85-104

The requirements of being archivists and records managers were revised in 2011 and expanded in the scope of their education levels such as having master`s or higher degrees in archives and records management, or completion of one year program of arch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1512a2131dccdb807c37dedc5ef9b53
https://doi.org/10.14699/kbiblia.2012.23.3.085

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