Výsledky vyhledávání - "Pyung Ho, Choi"

Preparation and Characterization of P-Type and N-Type Doped Expanded Graphite Polymer Composites for Thermoelectric Applications

Autor: Hyoung Sun Park, Pyung Ho Choi, Reza Javadi, Byoungdeog Choi

Publikováno v: Journal of Nanoscience and Nanotechnology. 15:9116-9119

In this work, we demonstrate that expanded graphite can be sufficiently dispersed in polymer solution to form suspensions. Thin composite films were prepared by casting and drying the suspensions. The thermoelectric properties of expanded graphite (E

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af8f8c0012bc463068a54eed18a7c0a5
https://doi.org/10.1166/jnn.2015.11584

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Abnormal Threshold Voltage Shifts in P-Channel Low-Temperature Polycrystalline Silicon Thin Film Transistors Under Negative Bias Temperature Stress

Autor: Pyung Ho Choi, Jaehyeong Lee, Do Hyun Baek, Byoungdeog Choi, Sang Sub Kim

Publikováno v: Journal of Nanoscience and Nanotechnology. 15:7555-7558

In this research, we have investigated the instability of P-channel low-temperature polycrystalline silicon (poly-Si) thin-film transistors (LTPS TFTs) with double-layer SiO2/SiNX dielectrics. A negative gate bias temperature instability (NBTI) stres

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37e269b73bb81db23462f8980da79586
https://doi.org/10.1166/jnn.2015.11167

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Electrical Properties of Solution Processed In–Ga–ZnO Thin Film Transistors with Multi-Stacked Active Layer

Autor: Hyun-Woo Kim, Byoungdeog Choi, Pyung Ho Choi, Soon Kon Kim, Sang Sub Kim, Nayoung Lee

Publikováno v: Journal of Nanoscience and Nanotechnology. 15:7508-7512

In this study, we prepared solution-based In–Ga–ZnO thin film transistors (IGZO TFTs) having a multistacked active layer. The solution was prepared using an In:Zn = 1:1 mole ratio with variation in Ga content, and the TFTs were fabricated by stac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f5a393f0c35653b08877dda03bbbe2d
https://doi.org/10.1166/jnn.2015.11169

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Proximity Warning and Excavator Control System for Prevention of Collision Accidents

Autor: Junghoon Kim, Do Keun Kim, Pyung Ho Choi, Byung-Wan Jo, Yun Sung Lee

Publikováno v: Sustainability, Vol 9, Iss 8, p 1488 (2017)
Sustainability; Volume 9; Issue 8; Pages: 1488

Construction is a hazardous industry in which accidents occur frequently. Occupational accidents at construction sites are a serious public health issue in Korea. Construction site conditions often create dangerous situations by requiring workers and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::229ef6944aa85b8ef281683ddbf2f712
https://www.mdpi.com/2071-1050/9/8/1488

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Temperature-Dependent Electrical Characteristics of c-Si and CIGS Solar Cells

Autor: Pyung Ho Choi, Do Hyun Baek, Hyoung Sun Park, Sang Sub Kim, Jun Sin Yi, Sang Soo Kim, Byoung Deog Choi

Publikováno v: Journal of Nanoscience and Nanotechnology. 14:9206-9209

We characterized the electrical behavior of crystalline silicon (c-Si) and Cu(In(1-x)Ga(x))Se2 (CIGS) solar cells by current-voltage (I-V) and capacitance-voltage (C-V) methods. We investigated the temperature-dependent carrier transport mechanism by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6e06fa274955f48d0efcad6181b1f63
https://doi.org/10.1166/jnn.2014.10145

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Preparation and Characterization of P-Type and N-Type Doped Expanded Graphite Polymer Composites for Thermoelectric Applications

Autor: Reza, Javadi, Pyung Ho, Choi, Hyoung Sun, Park, Byoung Deog, Choi

Publikováno v: Journal of nanoscience and nanotechnology. 15(11)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::4a0387969605e91f2aa447cd5ed869b3
https://pubmed.ncbi.nlm.nih.gov/26726653

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