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Kim, Juran,Kim, Gee Yeong,Son, Dae-Ho,Yang, Kee-Jeong,Kim, Dae-Hwan,Kang, Jin-Kyu,Jo, William Elsevier 2018 Solar energy materials and solar cells Vol.183 No.-
<P><B>Abstract</B></P> <P>Cu<SUB>2</SUB>ZnSn(S,Se)<SUB>4</SUB> (CZTSSe) thin-film solar cells have been fabricated by various methods. Sputtering is one of the vacuum processes that can be used for the growth of the precursors. In this study, CZTSSe thin-films that were fabricated using metal-precursors and with a high efficiency of 12.3% were examined in a comparison with CZTSSe thin-films that were fabricated using compound-precursors, whose efficiency is 9.1%. Especially, the Kelvin probe force microscopy (KPFM) analysis and local current measurement by conductive atomic force microscopy (c-AFM) show that their local electrical properties indicate completely opposite results. The grain boundaries (GBs) has a downward surface potential bending, and this repelled the minority carriers into the intragrains (IGs) in the sample from the metal-precursors. Therefore, we originally verified the differences between the carrier behaviors and the current flows on the surface.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Using different precursor materials and stacks, Cu<SUB>2</SUB>ZnSn(S,Se)<SUB>4</SUB> thin-film solar cells were fabricated. </LI> <LI> The PCE of the metal-precursor CZTSSe solar cell is 12.3%, while that of compound-precursor's is 9.1%. </LI> <LI> Downward potential bending was observed in the metal-precursor CZTSSe thin-film. </LI> <LI> Surface current was formed on the intra-grains on the metal-precursor CZTSSe thin-film. </LI> <LI> The compound-precursor CZTSSe thin-film indicated inversed results from the metal-precursor one. </LI> </UL> </P>
Kim, Kihwan,Kim, Juran,Gang, Myeng Gil,Kim, Se-Ho,Song, Soomin,Cho, Yunae,Shin, Donghyeop,Eo, Young-Joo,Jeong, Inyoung,Ahn, Seung Kyu,Cho, Ara,Kim, Jayeong,Yoon, Seokhyun,Choi, Pyuck-Pa,Jo, William,Ki Elsevier 2019 Solar energy materials and solar cells Vol.195 No.-
<P><B>Abstract</B></P> <P>In this work, copper indium gallium selenide (Cu(In,Ga)Se<SUB>2</SUB>; CIGS) absorbers were grown on polyimide (PI)/molybdenum substrates by a three-stage co-evaporation process at various temperatures, film formation was systemically studied using various advanced characterization methods such as transmission electron microscopy, micro-Raman spectroscopy, Kelvin probe force microscopy, and atom probe tomography. The CIGS films on PI were found to exhibit considerable physical and electrical variations with respect to the process temperature of three-stage co-evaporation. In particular, when the process temperature reached 400 °C, the CIGS absorber on PI began to exhibit controlled microstructure and intergrain properties. By adjusting the microstructure and intergrain properties of the absorber films by means of the process temperature of three-stage co-evaporation, flexible CIGS solar cells on PI with an efficiency of 16.7% (with anti-refection coating) were achieved.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CIGS absorber films were grown on flexible polyimide/molybdenum substrates. </LI> <LI> Low-temperature three-stage process (≤440 °C) with extrinsic Na addition was used to CIGS growth. </LI> <LI> CIGS film evolution was systemically observed using advanced material characterization techniques. </LI> <LI> Highly efficient CIGS cells on flexible polyimide substrates were realized while maintaining process manufacturability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
ASSESSING SUSTAINABLE CUSTOMER VALUE IN FASHION SOCIAL PLATFORMS
Sung Hwan Yeo,Kyung Hoon Kim,Juran Kim 글로벌지식마케팅경영학회 2015 Global Fashion Management Conference Vol.2015 No.06
A fashion social platform is a system that leverages the power of social connectivity to enable individuals to interact, accumulate information and create social values in fashion marketing. Fashion social platform participants, through their collective intelligence, give social platforms essential competence to solve economic and social issues, gather social capital, and create customer value. This study highlights the critical value of fashion social platforms and explains the relationships between knowledge sharing, social capital, and sustainable customer value. They examine (1) the effects of social network properties on knowledge sharing in fashion social platforms, (2) the effects of knowledge sharing on social capital, and (3) the effects of social capital on customer value in fashion social platforms. In the context of social platforms, this study clarifies the concept of customer value, the role of knowledge sharing, and the relationships between social capital and customer value. The study constructs a theoretical model regarding fashion social platforms and sustainable customer value that offers possible implications for fashion marketing practitioners.
Influences of symbolic capital on destination brand equity
Kim Juran,Bae Joonheui 한국마케팅과학회 2023 마케팅과학연구 Vol.33 No.4
This study clarifies destination brand equity and examines the effect of destination brand personality on symbolic capital and attitude toward destination brand, and the effect of symbolic capital and attitude on destination brand equity. Using a survey research method, 309 participants from South Korea were recruited. The finding indicated that a well-established destination personality enhanced symbolic capital and positive attitudes toward the destination, leading to higher destination brand equity. This study contributes to the body of knowledge by clarifying the concept of symbolic capital and highlighting the effects of destination brand personality on symbolic capital and attitudes toward destination brands, which in turn lead to destination brand equity. Our findings have practical implications for destination brand marketing strategies, suggesting that these strategies can be made more effective by catering to symbolic capital and destination brand equity.
Juran Kim,Ki Hoon Lee,Jang-Sun Hwang 한국광고PR실학회 2017 광고PR실학연구 Vol.10 No.3
최근 많은 분야에서 활용되는 3D프린팅 기술의 혁신성과 희소성은 럭셔리 브랜드의 독특함과 희소성의 이미지와 잘 어울리기 때문에 본 연구에서는 3D프린팅 캠페인 경험에 의한 럭셔리 브랜드의 지각된 가치 에 대한 소비자의 영향력을 살펴보고자 하였다. 연구1에서는 3D프린팅 캠페인의 이성적(실용적) 경험 과 감성적(쾌락적) 경험이 브랜드 가치에 미치는 영향을 럭셔리 브랜드 커뮤니티 가입자를 대상으로 조 사하였다. 연구2에서는 일반소비자를 대상으로 럭셔리브랜드 가치에 대한 영향력이 다르게 나타나는지 를 이성적/감성적 콘텐츠 캠페인 각각에 대하여 검증하였다. 요약하면 럭셔리 브랜드를 위한 3D프린팅 캠페인의 감성적 경험이 캠페인에 대한 긍정적 효과를 주고 이는 브랜드 가치와 구매의도에 양의 영향을 주는 것으로 밝혀졌다. 또한 감성적 콘텐츠에 의한 3D 캠페인을 하는 경우 럭셔리 브랜드에서 광고태도 가 브랜드 가치상승에 영향을 주는 것으로 밝혀졌다. 3D printing technology provides innovative and exceptional experiences beyond routine experiences for brands. Luxury brands can take full advantage from this newly developed technology due its inherent characteristics such as rarity and uniqueness. This study focuses on the ad campaign experiences through 3D printing technology for luxury brands and their influences on the perceived value of luxury brands. Study1 focused on examining the influence of utilitarian and hedonic experiences with 3D printing campaigns on perceived value of luxury brand. Study 2 concentrated on different relationships between attitude and brand evaluation within utilitarian or hedonic dominant 3D printing campaigns by comparing brand types for potential consumers in general.
Determinants of Corporate Financial Investment : Evidence from Korea
Juran Kim,Kyojik (Roy) Song 한국재무학회 2020 한국재무학회 학술대회 Vol.2020 No.11
Extending DGHH (2017), we investigate the determinant of risky financial asset holdings of Korean industrial firms. We specifically focus on the difference on the determinants of risky financial assets for Chaebol vs. stand-alone firms, and find that Chaebol firms tend to increase more in risky financial assets as their financial assets grow than stand-alone firms. The standalone firms with low operating performance, low sales growth, high leverage, and short-term debt redemption pressure invest more in risky financial assets to make up for their worse operating performance, while the risky financial assets of Chaebol firms are not related to their operating performance or financial distress. These results are not fully explained by the precautionary motive of cash holdings.