SiO₂의 첨가를 통한 Polyfluorene계 Polymer-OLED의 발광 동작 개선 가능성

전병주,김효준,김종수,정용석,Jeon, Byung Joo,Kim, Hyo Jun,Kim, Jong Su,Jeong, Yong Seok 한국반도체디스플레이기술학회 2017 반도체디스플레이기술학회지 Vol.16 No.1

The effect of weak dielectric silicone dioxide($SiO_2$) embedded in polyfluorene(PFO) emitting layer of polymer-based multi structure OLED was investigated. Indium tin oxide(ITO)/poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS)/poly(9,9-di-n-octylfluorenyl-2,7-diyl)(PFO)/2,2,2"-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TPBi)/aluminum(Al) structure OLED was fabricated by spin-coating method. Applied electric field causes some effect on $SiO_2$ in PFO layer. Thus, interaction between polymers and affected $SiO_2$ might generate electrical and luminance properties change. Experimental results, show the reduced threshold voltage of 6 V(from 23 V to 17 V). The maximum current density was rather increased from $71A/m^2$ to $610A/m^2$ and maximum brightness was also increased from $7.19cd/m^2$ to $41.03cd/m^2$, 9 and 6 times each. Additionally we obtained colour broadening result due to the increasing of blue-green band emission. Consequently we observed that electrical and luminance properties are enhanced by adding $SiO_2$ and identified the possibility of controlling the emission colour of OLED device according to colour broadening.

헬륨을 이용한 초미세 발포 사출

전병주(Byung Joo Jeon),차성운(Sung Woon Cha),김학빈(Hak Bin Kim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10

In comparison with conventional foaming process microcellular injection molding process has advantages such as small bubble size, the removal of sink mark, scale reliability, and weight lightening. So microcellular injection molded parts are applied to electrical product and automobile part. Conventional microcellular foaming process used carbon dioxide and nitrogen as a foaming agent. And it has been never researched and applied about microcellular injection molding process using helium. In this paper, we did a microcellular injection molding process using helium based on previous research result and made samples. From this we can certificate the possibility of microcellular continuous process using helium. Helium is lighter and faster in diffusion than carbon dioxide or nitrogen so through this technique, it can be solved the problem such as spray or labeling.

동축 케이블용 절연체의 발포 특성 연구

전병주(Byung Joo Jeon),차성운(Sung Woon Cha),이경수(Kyung Soo Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6

Coaxial cables are perhaps the most common, basic, and easy to understand cables of common transmission line designs. The insulation, or dielectric material in the coaxial cable, is used to provide separation between the conductors. As the tendency of the communication toward to high frequencies, high foamed dielectric material needed, because of the lower dielectric constant of dielectric materials, the lower attenuation. The physical foaming process applies the dielectric material. In this research, microcellular foaming process applies to make the insulator of coaxial cables. To find out the characteristics of foaming characteristics of the insulator for coaxial cable the contents of resin was compared. The proper contents of resin was found out. As a result high foamed insulator was obtained.

상표자산과 구매의도와의 관계에 관한 국제비교연구 - 아시아와 유럽의 의류시장을 중심으로 -

김경훈,고은주,이동해,정홍섭,전병주,문학일,Kim, Kyung-Hoon,Ko, Eun-Ju,Graham, Hooley,Lee, Nick,Lee, Dong-Hae,Jung, Hong-Seob,Jeon, Byung-Joo,Moon, Hak-Il 한국마케팅과학회 2008 마케팅과학연구 Vol.18 No.4

본 연구는 상표자산의 구성요소에 대한 선행요인을 분석하고 이를 토대로 하여 상표자산 구성요소와 상표자산 영향요인간의 관계 그리고 상표자산 구성요소와 구매의도간의 관계를 규명하고 한국과 영국을 중심으로 비교하여 상표자산관리 방안을 도출해보고자 하였다. 연구결과, 정보탐색은 제품지식에 정(+)의 영향을 미치며, 상표태도와 상표지식은 상표 충성도와 상표 가치에 정(+)의 영향을 미치는 것으로 나타났다. 그리고 상표충성도와 상표가치는 구매의도에 정(+)의 영향을 미치는 것으로 나타났다. 정보원천의 경우, 한국에서는 제품지식에 정(+)의 영향을 미치고 있는 반면, 영국에서는 영향을 미치지 않는 것으로 나타났다. Brand equity is one of the most important concepts in business practice as well as in academic research. Successful brands can allow marketers to gain competitive advantage (Lassar et al.,1995), including the opportunity for successful extensions, resilience against competitors' promotional pressures, and the ability to create barriers to competitive entry (Farquhar, 1989). Branding plays a special role in service firms because strong brands increase trust in intangible products (Berry, 2000), enabling customers to better visualize and understand them. They reduce customers' perceived monetary, social, and safety risks in buying services, which are obstacles to evaluating a service correctly before purchase. Also, a high level of brand equity increases consumer satisfaction, repurchasing intent, and degree of loyalty. Brand equity can be considered as a mixture that includes both financial assets and relationships. Actually, brand equity can be viewed as the value added to the product (Keller, 1993), or the perceived value of the product in consumers' minds. Mahajan et al. (1990) claim that customer-based brand equity can be measured by the level of consumers' perceptions. Several researchers discuss brand equity based on two dimensions: consumer perception and consumer behavior. Aaker (1991) suggests measuring brand equity through price premium, loyalty, perceived quality, and brand associations. Viewing brand equity as the consumer's behavior toward a brand, Keller (1993) proposes similar dimensions: brand awareness and brand knowledge. Thus, past studies tend to identify brand equity as a multidimensional construct consisted of brand loyalty, brand awareness, brand knowledge, customer satisfaction, perceived equity, brand associations, and other proprietary assets (Aaker, 1991, 1996; Blackston, 1995; Cobb-Walgren et al., 1995; Na, 1995). Other studies tend to regard brand equity and other brand assets, such as brand knowledge, brand awareness, brand image, brand loyalty, perceived quality, and so on, as independent but related constructs (Keller, 1993; Kirmani and Zeithaml, 1993). Walters(1978) defined information search as, "A psychological or physical action a consumer takes in order to acquire information about a product or store." But, each consumer has different methods for informationsearch. There are two methods of information search, internal and external search. Internal search is, "Search of information already saved in the memory of the individual consumer"(Engel, Blackwell, 1982) which is, "memory of a previous purchase experience or information from a previous search."(Beales, Mazis, Salop, and Staelin, 1981). External search is "A completely voluntary decision made in order to obtain new information"(Engel & Blackwell, 1982) which is, "Actions of a consumer to acquire necessary information by such methods as intentionally exposing oneself to advertisements, taking to friends or family or visiting a store."(Beales, Mazis, Salop, and Staelin, 1981). There are many sources for consumers' information search including advertisement sources such as the internet, radio, television, newspapers and magazines, information supplied by businesses such as sales people, packaging and in-store information, consumer sources such as family, friends and colleagues, and mass media sources such as consumer protection agencies, government agencies and mass media sources. Understanding consumers' purchasing behavior is a key factor of a firm to attract and retain customers and improving the firm's prospects for survival and growth, and enhancing shareholder's value. Therefore, marketers should understand consumer as individual and market segment. One theory of consumer behavior supports the belief that individuals are rational. Individuals think and move through stages when making a purchase decision. This means that rational thinkers have led to the identification of a consumer buying decision process. This decision process with i

적색 CdSe/CdZnS Core-Shell Quantum Dot 기반 발광다이오드

김효준 ( Hyo Jun Kim ),전병주 ( Byung Joo Jeon ),박광원 ( Kwang Won Park ),정용석 ( Yong Seok Jeong ) 한국화상학회 2016 한국화상학회지 Vol.22 No.1

CdSe/CdZnS core/shell/lignad 구조를 가지는 red quantum dot을 이용하여 indium tin oxide(양전극) glass 위에 poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS), CdSe/CdZnS quantum dot, 2,2,2"-(1,3,5-Benzinetriyl)-tris (1-phenyl-1-H-benzimidazole) (TPBi)을 순차적으로 스핀코팅을 하고, aluminium(Al)(음전극)을 진공 열증착 통해 다층구조를 제작하여 연구를 진행하였다. 본 연구에 사용된 quantum dot의 PL 측정과 흡수스펙트럼 측정을 통해 644 nm에서 PL peak가 나타나고, 602 nm에서 흡수 peak를 관찰할 수 있었다. 제작된 소자는 8 V에서 발광하기 시작하여, 이는 turn-on voltage로 판단하였다. 전압이 증가함에 따라 전류밀도와 휘도가 지수함수적인 증가를 보였다. 스펙트럼의 peak는 11 V에서 629 nm이다가, 최대 동작전압인 17 V에서는 645 nm로 red shift하였고, 반치폭 또한 11 V에서 44.6 nm이다가 17 V에서는 52.3 nm로 넓어지는 것을 관찰할 수 있었다. 스펙트럼의 변화에 따라 색좌표도 변화하는 것을 관찰할 수 있었다. Red electroluminescence behavior of CdSe/CdZnS core-shell quantum dots between hole transport layer (PEDOT:PSS) and electron transport layer (TPBi) were investigated. Colloidal CdSe/CdZnS core-shell quantum dots by capped with long-chain amine showed the red photoluminescence with 644 nm peak wavelength and 602 nm absorption peak. In this article, This device’s turn-on voltage is 8 V. As an increase of applied voltages, current densities and luminances are exponentially increased. The red electroluminescence spectra were red shifted from 629 nm peak wavelength at 11 V to 645 nm peak wavelength at maximum voltage of 17 V, and their widths were broadened from 44.6 nm at 11 V to 52.3 nm at 17 V.

패밀리레스토랑의 건강관련요소에 대한 중요도-만족도 분석

박은정(Park, Eun-Jung),임연우(Lim, Yeon-Woo),전병주(Jeon, Byung-Joo) 한국외식산업경영학회 2006 외식산업경영연구 Vol.2 No.3

차량용 언더커버 설계 변경에 따른 주행소음 연구

김영호(Young Ho Kim),차성운(Sung Woon Cha),전병주(Byung Joo Jeon) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

Undercover for automobile that covers bottom of automobile partly or all over, performs car body protection and noise insulation. Glass fiber reinforced polypropylene is used in general. Polyurethane foam or rubber is applied for contact surface and contamination sealing. In driving condition, it is advantageous reducing weight in fuel efficiency and environmental effect. However, weight reducing brings disadvantages such as stiffness and noise insulation performance. In this study, pass-by noise test performed with undercovers have different design and materials. The various undercovers used for test produced by mold shape change and procedure change. The pass-by noise test is based on ISO-362 standard.

Brand Equity and Purchase Intention in Fashion Products A Cross-Cultural Study in Asia and Europe

김경훈(Kim, Kyung Hoon),고은주(Eunju Ko),Hooley Graham, Nick Lee, 이동해(DongHae Lee),정홍섭(Hong Seob Jung),전병주(Byung Joo Jeon),문학일(Hakil Moon) 한국마케팅과학회 2008 마케팅과학연구 Vol.18 No.4

본 연구는 상표자산의 구매요소에 대한 선행요인을 분석하고 이를 토대로 하여 상표자산 구성요소와 상표자산 영향요인간의 관계 그리고 상표자산 구성요소와 구매의도간의 관계를 규명하고 한국과 영국을 중심으로 비교하여 상표자산관리 방안을 도출해보고자 하였다. 연구결과, 정보탐색은 제품지식에 정(+)의 영향을 미치며, 상표태도와 상표지식은 상표 충성도와 상표 가치에 정(+)의 영향을 미치는 것으로 나타났다. 그리고 상표충성도와 상표가치는 구매의도에 정(+)의 영향을 미치고 있는 반면, 영국에서는 영향을 미치지 않는 것으로 나타났다. Brand equity is one of the most important concepts in business practice as well as academic research Successful brands can allow marketers to gain competitive advantage (Lassar et al, 1995), including the opportunity for successful extensions, resilience against competitiors' promotional pressures, and the ability to create barriers to competitive entry (Farquhar, 1989) Branding plays a special role in service firms because strong brands increase trust in intangible products (Berry, 2000), enabling customers to better visualize and understand them They reduce customers' perceived monetary, social and safety risks in buying services, which are obstacles to evaluating a service correctly before purchase Also, a high level of brand equity increases consumer satisfaction, repurchasing intent, and degree of loyalty. Brand equity can be considered as a mixture that includes both financial assets and relationships Actually, brand equity can be viewed as the value added to the product (Keller, 1993), or the perceived value fo the product in consumers' minds Mahajan et al (1990) claim that customer-based brand equity can be measured by the level of consumer's perceptions Several researchers discuss brand equity based on two dimensions consumer perception and consumer behavior Aaker(1991) suggests measuring brand equity through price premium, loyalty, perceived quality, and brand associations Viewing brand equity as the consumer's behavior toward a brand, Keller (1993) proposes similar dimensions brand awareness and brand knowledge Thus, past studies tend to identify brand equity as a multidimensional construct consisted of brand loyalty, brand awareness, brand knowledge, customer satisfaction, perceived equity, brand associations, and other proprietary assets (Asker, 1991, 1996, Blackston, 1995, Cobb-Walgren et al, 1995, Na 1995) Other studies tend to regard brand equity and other brand assets, such as brand knowledge, brand awareness, brand image, brand loyalty, perceived quality, and so on, as independent but related constructs (Keller, 1993, Kirmant and Zeitham, 1993) Walters(1978) defined information search as, ""A psychological or physical action a consumer takes in order to acquire information about a p개duct or store"" But, each consumer has different methods for information search There are two methods of information search, internal and external search Internal search is, ""Search of information already saved in the memory of the individual consumer"" (Engel, blackwell, 1982) which is, ""memory of a previous purchase experience or information from a previous search ""(Beales, Mazis, Salop, and Staelin, 1981) External search is "" A completely voluntary decision made in order to obtain new information""(Engel, blackwell, 1982) which is, ""Actions of a consumer to acquire necessary information by such methods as intentionally exposing oneself to advertisements, taking to friends or family or visiting a store""(Beales, Mazis, Salop, and Staelin, 1981) There are many sources for consumers' information search including advertisement sources such as the internet, radio, television, newspapers and magazines, information supplied by businesses such as sales people, packaging and in-store information, consumer sources such as family, friends and colleagues, and mass media sources such as consumer protection agencies, government agencies and mass media sources. Understanding consumers' purchasing behavior is a key factor of a firm to attract and retain customers and improving the firm's prospects for survival and growth, and enhancing shareholder's value Therefore, marketers should understand consumer as individual and market segment One theory of consumer behavior supports the belief that individuals are rational Individuals think and move through stages when making a purchase decision this means that rational thinkers have led to the identificaiton of a consumer buying decision precess This decision precess with its different le

상표자산과 구매의도와의 관계에 관한 국제비교연구 : 아시아와 유럽의 의류시장을 중심으로

김경훈,고은주,Graham Hooley,Nick Lee,이동해,정홍섭,전병주,문학일 가야대학교 2009 가야대학교 논문집 Vol.18 No.-

본 연구는 상표자산의 구성요소에 대한 선행요인을 분석하고 이를 토대로 하여 상표자산 구성요소와 상표자산 영향요인간의 관계 그리고 상표자산 구성요소와 구매의도간의 관계를 규명하고 한국과 영국을 중심으로 비교하여 상표자산관리 방안을 도출해보고자 하였다 연구결과, 정보탐색은 제품지식에 정(+)의 영향을 미치며, 상표태도와 상표지식은 상표 충성도와 상표 가치에 정(+)의 영향을 미치는 것으로 나타났다 그리고 상표충성도와 상표가치는 구매의도에 정(+)의 영향을 미치는 것으로 나타났다. 정보원천의 경우, 한국에서는 제품지식에 정(+)의 영향을 미치고 있는 반면, 영국에서는 영향을 미치지 않는 것으로 나타났다. Brand equity is one of the most important concepts in business practice as well as in academic research. Successful brands can allow marketers to gain competitive advantage (Lassar et al.,1995), including the opportunity for successful extensions, resilience against competitors' promotional pressures, and the ability to create barriers to competitive entry (Farquhar, 1989). Branding plays a special role in service firms because strong brands increase trust in intangible products (Berry, 2000), enabling customers to better visualize and understand them. They reduce customers' perceived monetary, social, and safety risks in buying services, which are obstacles to evaluating a service correctly before purchase. Also, a high level of brand equity increases consumer satisfaction, repurchasing intent, and degree of loyalty. Brand equity can be considered as a mixture that includes both financial assets and relationships. Actually, brand equity can be viewed as the value added to the product (Keller, 1993), or the perceived value of the product in consumers' minds. Mahajan et al. (1990) claim that customer-based brand equity can be measured by the level of consumers’ perceptions. Several researchers discuss brand equity based on two dimensions: consumer perception and consumer behavior. Aaker (1991) suggests measuring brand equity through price premium, loyalty, perceived quality, and brand associations. Viewing brand equity as the consumer’s behavior toward a brand, Keller (1993) proposes similar dimensions: brand awareness and brand knowledge. Thus, past studies tend to identify brand equity as a multidimensional construct consisted of brand loyalty, brand awareness, brand knowledge, customer satisfaction, perceived equity, brand associations, and other proprietary assets (Aaker, 1991, 1996; Blackston, 1995; Cobb-Walgren et al., 1995; Na, 1995). Other studies tend to regard brand equity and other brand assets, such as brand knowledge, brand awareness, brand image, brand loyalty, perceived quality, and so on, as independent but related constructs (Keller, 1993; Kirmani and Zeithaml, 1993). Walters(1978) defined information search as, "A psychological or physical action a consumer takes in order to acquire information about a product or store." But, each consumer has different methods for informationsearch. There are two methods of information search, internal and external search. Internal search is, "Search of information already saved in the memory of the individual consumer"(Engel, Blackwell, 1982) which is, "memory of a previous purchase experience or information from a previous search."(Beales, Mazis, Salop, and Staelin, 1981). External search is "A completely voluntary decision made in order to obtain new information"(Engel & Blackwell, 1982) which is, "Actions of a consumer to acquire necessary information by such methods as intentionally exposing oneself to advertisements, taking to friends or family or visiting a store."(Beales, Mazis, Salop, and Staelin, 1981). There are many sources for consumers’ information search including advertisement sources such as the internet, radio, television, newspapers and magazines, information supplied by businesses such as sales people, packaging and in-store information, consumer sources such as family, friends and colleagues, and mass media sources such as consumer protection agencies, government agencies and mass media sources. Understanding consumers’ purchasing behavior is a key factor of a firm to attract and retain customers and improving the firm’s prospects for survival and growth, and enhancing shareholder’s value. Therefore, marketers should understand consumer as individual and market segment. One theory of consumer behavior supports the belief that individuals are rational. Individuals think and move through stages when making a purchase decision. This means that rational thinkers have led to the identification of a consumer buying decision process. This decision process with its different levels of involvement and influencing factors has been widely accepted and is fundamental to the understanding purchase intention represent to what consumers think they will buy. Brand equity is not only companies but also very important asset more than product itself. This paper studies brand equity model and influencing factors including information process such as information searching and information resources in the fashion market in Asia and Europe. Information searching and information resources are influencing brand knowledge that influences consumers purchase decision. Nine research hypotheses are drawn to test the relationships among antecedents of brand equity and purchase intention and relationships among brand knowledge, brand value, brand attitude, and brand loyalty. H1. Information searching influences brand knowledge positively. H2. Information sources influence brand knowledge positively. H3. Brand knowledge influences brand attitude. H4. Brand knowledge influences brand value. H5. Brand attitude influences brand loyalty. H6. Brand attitude influences brand value. H7. Brand loyalty influences purchase intention. H8. Brand value influence purchase intention. H9. There will be the same research model in Asia and Europe. We performed structural equation model analysis in order to test hypotheses suggested in this study. The model fitting index of the research model in Asia was X2=195.19(p=0.0), NFI=0.90, NNFI=0.87, CFI=0.90, GFI=0.90, RMR=0.083, AGFI=0.85, which means the model fitting of the model is good enough. In Europe, it was X2=133.25(p=0.0), NFI=0.81, NNFI=0.85, CFI=0.89, GFI=0.90, RMR=0.073, AGFI=0.85, which means the model fitting of the model is good enough. From the test results, hypotheses were accepted. All of these hypotheses except one are supported. In Europe, information search is not an antecedent of brand knowledge. This means that sales of global fashion brands like jeans in Europe are not expan