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신가현,김홍렬,김지현 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.2
Low-dimensional semiconductor p-n junctions as components for optoelectronic devices are considered to be more promising than thin film equivalents. We fabricated heterojunction p-n solar blind photodiodes with the configuration of n-type β-Ga2O3 nanobelts contacted onto p-Si substrates. The junction between β-Ga2O3 and Si was formed by van der Waals interactions. The fabricated heterojunction p-n diodes exhibited typical rectifying current– voltage characteristics, with a rectification ratio as high as 1.56×104 at ±20 V and an ideality factor of approximately eight. Photoresponsive measurements showed that the heterojunction p-n diodes had a high sensitivity and selectivity for light at a wavelength of 254 nm, with fast response and decay characteristics. For the fast-response components, the response time constant was 4.06 s and the decay time constant was 0.16 s. The exfoliated β-Ga2O3 nanobelt/Si p-n heterojunction presented here constitutes a functional unit for low-dimensional ultra-wide bandgap electronic and optoelectronic devices.
지각된 서비스 품질과 제품관련속성이 쇼핑몰에 대한 태도에 미치는 영향
신가현(Shin, KaHyun),정명선(Chung MyungSun) 전남대학교 생활과학연구소 2001 生活科學硏究 Vol.11 No.-
The purpose of this study was to investigate whether the perceived service qualities and attributes of products provided by shopping mall influence on the consumers’ satisfaction and attitudes toward the store. The data were collected using questionnaires were distributed for five days from 11 March 2000 to 15 March 2000 to the female consumers, who were coming out after shopping from two selected shopping malls in Seoul. Korea and 389 pieces of them were used in the final analysis. The research results were as follows: 1. The service qualities of shopping malls have a multi-dimensional structure composed of convenience of the shops, reliability, VMD and salesclerks, and the explanation rate on the total variance of those five components is 55.13%. It appears that the consumers’ perception is rather favorable (M=4.13) toward the service qualities. 2. Of the factors about the attributes of products, the perception of products assortment is high(M=4.838), but the perception of products qualities is low (M=3.503), and the perception of products prices is on the average (M=3.927). 3. The degrees of satisfaction on the service qualities (β=.147), products assortment (β=.159), products qualities(β=.256) and products prices in shopping malls(β=.284) have statistically significant effects on the overall degree of satisfaction in shopping malls, and the total variable quantity that is explained by the variables appears 63.81% (F=167.046: p<.001). 4. The degrees of satisfaction on the service qualities (β=.012), products qualities(β=.011) and prices(β=.012) appear significant variables that make positive effects on the shop attitudes, and the total variable quantity that is explained by the variables appears 21.90% (F=35.61: p<.001), and it is analyzed that the three independent variables make similar levels of effects on the shop attitudes, the dependent variable.
신가현, 정명선 전남대학교 가정과학연구소 2001 生活科學硏究 Vol.11 No.-
The purpose of this study was to investigate whether the perceived service qualities and attributes of products provided by shopping mall influence on the consumers' satisfaction and attitudes toward the store. The data were collected using questionnaires were distributed for five days from 11 March 2000 to 15 March 2000 to the female consumers, who were coming out after shopping from two selected shopping malls in Seoul, Korea and 389 pieces of them were used in the final analysis. The research results were as follows ; 1.The service qualities of shopping malls have a multi-dimensional structure composed of convenience of the shops, reliability, VMD and salesclerks, and the explanation rate on the total variance of those five components is 55.13%. It appears that the consumers' perception is rather favorable (M =4.13) toward the service qualities. 2.Of the factors about the attributes of products, the perception of products assortment is high (M =4.838), but the perception of products qualities is low (M =3.503), and the perception of products prices is on the average (M = 3.927). 3.The degrees of satisfaction on the service qualities (β =.147), Products assortment(β =.159), products qualities(β =.256) and products prices in shopping malls(β =.284) have statistically significant effects on the overall degree of satisfaction in shopping malls, and the total variable quantity that is explained by the variables appears 63.81 % (F=167.046: p<.001). 4.The degrees of satisfaction on the service qualities (β =.012), products qualities(β =.011) and prices(β =.012) appear significant variables that make positive effects on the shop attitudes, and the total variable quantity that is explained by the variables appears 21.90 % (F=35.61 : p<.001), and it is analyzed that the three independent variables make similar levels of effects on the shop attitudes, the dependent variable.