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吳日秀 圓光大學校大學院 1979 學位論叢 Vol.2 No.-
This research was performed to determine influence of different light levels(70% shade, 55% shade, 40% shade, no shade) on the rooting of cutting, growth and flowering of chrysanthemum morifolium, Ramat. The conclutions drown from experimental obserbations made from the present studies are presented herewith as follows: In all experimental block appeared 100% rooting. Under no shade, rooting no., rooting length, fresh weight and dry weight were increased significantly. Under 55% shade and 40% shade, the rooting was more improved than under 70% shade but it was decreased signficantly than that of no shade. Under 70% shade, the rooting was inhibited significantly. Under no shade, plant height was short little bit but leaf width, leaf length, fresh weight and dry weight was increased significantly. Under 70% shade, the growth was inhibited, Under 55% shade and 40% shade, the growth was increased than 70% shade but ornamental value was decreased compare with 70% shade. In the flowering, it was normal under no shade. Under 70% shade, flower bud wasn't at all. Blind appeared almost under 55% shade, 40% shade and flower was very small and abnormal.
PEDOT:PSS-Free Organic Photovoltaic Cells Using Tungsten Oxides as Buffer Layer on Anodes
오일수,김민,한성훈,오세용 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.4
Tungsten oxide (WO3) was used as an anode buffer layer in conventional poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester (P3HT:PCBM-60) bulk hetero junction (BHJ) cells. Such a buffer layers acts as a hole-extraction layer and reduce series resistance, which leads to better performance of organic electronic devices. Organic photovoltaic (OPV) cells consisting of ITO/WO3/P3HT:PCBM/Al were fabricated. Photovoltaic devices with a short-circuit current density of 7.77 mA/cm2, an open-circuit voltage of 6.1 V, and a power conversion efficiency of 2.61% were achieved. This study revealed that WO3 based cells have significant shunt resistance which contributes to a high fill factor and open-circuit voltage. This demonstrates potential for using WO3 in poly(stylenesulfonate) doped poly(3,4-ethylenedioxythiophene):(PEDOT:PSS)-free systems.
오일수,지찬혁,오세용 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.1
This study introduces dielectric/metal/dielectric multilayers based on aWO3/Ag/WO3 (WAW) anode and Yb/BCP/Ag/WO3 (Yb/BAW)cathode for use in organic photovoltaic cells (OPVs). Here, the Yb/BCP hybrid multilayer provides an effective electron transport layer(ETL), while the Yb doping ensures that voltage loss due to interfacialband bending is effectively suppressed. Transparent OPVs producedwith a structure of WAW/P3HT:PCBM/Yb/BAW are shown to exhibita power conversion efficiency (PCE) of up to 2.42%, achieving a65.4% fill factor (FF) under one sun irradiation. These results indicatethat the use of Yb in transparent OPVs is vastly superior to other ETLs,as it improves the majority of critical parameters such as short circuitcurrent (Jsc), fill factor (FF) and PCE. This is attributed to a decrease inthe series resistance and increase in the shunt resistance, while anincrease in electron mobility also helps to ensure faster sweep out.
포도 Vinyl House 栽培에 의한 促成效果와 經濟性 考察
오일수,김종래 圓光大學校 園藝學硏究會 1972 園藝學會誌 Vol.- No.5
Plastic film이나 Polyethylene film의 出現으로 作物의 促成栽培는 급진전해 왔다. 菜蔬類 화훼류는 물론 應園樹種의 揷木床, 發芽?等으로 크게 利用되고 있으나 果樹類의 栽培엔 거의 利用되지 않고 있다.
朴仁鉉,吳日秀 圓光大學校大學院 1992 論文集 Vol.9 No.-
The present works were carried out to survey flower bud initiation time, germination temperature and sowing time as a fundamental study of the cultivation of chrysanthemum zawadskii native to Korea. The results obtained are as follows. 1. The flower bud initiation time of changhang products among C. zawadskii HERB. naktongense was mid of July in Iri district. 2. The seed germination rate was above 90% in case of the temperature range from 10℃ to 25℃, but the condition below 5℃ and above 30℃ inhibited the germination remarkably. 3. Considering the overall growth in accordance with sowing times, seedings sowed till May 26, grew well but seedings sowed after early June were not good. On the other hand, the seed of C. zawadskii was never flowering after germination at the year regardless of sowing times.