Effects of annealing temperature of aqueous solution-processed ZnO electron-selective layers on inverted polymer solar cells

Ka, Y.,Lee, E.,Park, S.Y.,Seo, J.,Kwon, D.G.,Lee, H.H.,Park, Y.,Kim, Y.S.,Kim, C. Elsevier Science 2013 Organic electronics Vol.14 No.1

We investigate the effects of ZnO annealing temperature (T<SUB>A</SUB>) on the performance of inverted polymer solar cells with ZnO electron-selective layers deposited by spin coating aqueous solutions of an ammine-hydroxo zinc complex. The inverted solar cells based on poly(3-hexylthiophene):[6,6]-phenyl-C<SUB>61</SUB>-butyric acid methyl ester with T<SUB>A</SUB> as low as 80<SUP>o</SUP>C exhibit power-conversion efficiencies of 3.6%, which is equal to those of devices with higher T<SUB>A</SUB>. Characterizations of the ZnO films using X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, grazing incidence wide-angle X-ray scattering, and optical transmittance measurements show that the abrupt improvement of device performance from T<SUB>A</SUB>=60 to 80<SUP>o</SUP>C is due to the improvement of energy-level alignment arising from the increases in the relative amount and the crystallinity of ZnO.

도서관의 경영전략을 위한 정보기술의 활용

한계문 新羅大學校 1997 論文集 Vol.43 No.-

This study is related to the strategic information system designed to the application for information technology to strategic management for libraries. By offering the fundamental materials for the judgement and forecast in management activities in libraries, reducing the uncertainty in decision making, and securing the higher rivalry through libraries, it suggests the fundamental guidance to the procedure, method, and the draft of the importation for information system capable to make the distinction for the own library from another libraries. The plan of strategic application for information technology is devided into the following three levels. ① The libralies trying to take the greatest virtue in the product of the accumulation of technology during some period of time, can adapt the strategic management in setting up the systematic plan. ② The libralies trying to take the greatest virtue in user service and the procedures of information management by the application for information technology, can set up the strategic technology development toward the higher additional value taking a serious view in the know-how in various technologies. ③ The libraries trying to improve the efficiency for the application for information technology, are important the policy making for development of technology. However, in most libralies, among the levels of application for information technology, either the strategic development which is capable for the diffusion of the existing information technology or importation technology, or the strategic management for either adaptation or reformation is considered more efficient rather than developing new technologies. Each library is reasonable to put in good order by planning the strategic development for information technology and/or the management system suitable to his own library.

中小製造業의 情報시스템 構築 方案 硏究

韓啓燮 동아대학교 경영대학 1994 經營硏究 Vol.- No.8

The information and communication technology makes all the people and their organizations change into information society. Especially all the firms need urgently its information systems to survive themselves in the competitive business society. The necessity of constructing well-applicable Information Systems is growing day by day to success in the fields. This paper provides an effective method to construct information systems which can be used very economical but powerful in small and medium manufacturing companies. Even though some advanced and big business are already operating their own appropriate information systems so as to get their remarkable productivity nowdays. The rest of those small firms are still trying to find out some acceptable systems fitting their own business in very poor situations. So this paper shows the situations of information systems in the small and medium manufacturing companies of the days. And then the directions for constructing information systems promoting those firms growing by the systems. This paper analized the real status of general management situations showed the solving procedures and methods to construct proper information systems on those firms. As a result, this study introduces somehow low cost, efficient, convinient flexible and very useful applying information systems with easier ways.

대학상담소에서의 접수면접

김계현 漢陽大學校 學生生活硏究所 1990 大學生活硏究 Vol.8 No.-

코스닥 등록기업의 거래소 이전효과에 관한 연구

이계원 조선대학교 지역사회발전연구원 2003 地域發展硏究 Vol.8 No.1

This study is purposed to test the market efficiency of KOSDAQ which present the adequate information to the investor in the second board market-I examine the impact of main board listing information on the stock price of KOSDAQ. I find that stock returns as measured by CAR are significantly increasing from disclosure day, which listing on KSE, to the after 30 business day. The positive correlation found between stock returns and listing announcement is also supportive of the view that KOSDAQ market has a lower degree of market efficiency than KSE. My findings can be summarized as follows. First, I find that listing on KSE is a good news for the investor in KOSDAQ. Second, CAR of listing firms from KOSDAQ is higher than the firms without KOSDAQ after listing day.

釜山市內 公共圖書館 現況 古書室 運營實態分析

韓桂文 新羅大學校 1989 論文集 Vol.27 No.-

This thesis presents the effecfive management and methods of preservation of old materials through the analysis of the public libraries' present conditons and their realities of the old materials in Pusan. In pusan, there are 9 Public libraries in 11 administrative districts. But these public libraries are distributd in 5 districts only. Therefore almost 50% of Pusan residents have not been available public libraries services. The size of public libraries, Geographic conditions of library locations, the samll collections, unmatching of user numbers to the numbers of library staffs, lack of Qualified librarians, ets., there are too many defects to be improved for the better public library services. Only one public library has the old materials room. I is the Citizen's library. Therefore the library services have not been suficient to the users, as far as old materials concerned.

온라인 열람목록의 개념적 고찰

한계문 新羅大學校 1985 論文集 Vol.18 No.-

The essential elements of a library catalog are bibliographic data and a structure to organize it. If the catalog is offered to the public, ease of use becomes another factor. An online catalog, at the minimum, fulfills the traditional objectives outlined by cutter, and this trend seems to continue in the future. The ultimate online system will be a linkage of separate systems, including data bases, processing files, abstracting and indexing files, housekeeping files and online reference services. Libravies are the larger universe of all bibliographic control tools and have to achieve the social purpose with which libraries should concern themselves. Librarians should seize control and direction, and understand and accept the immense responsibility on the shoulders of the developers of online catalogs.

IMF지원금융체제 전의 국내은행의 효율성과 주가와의 관계

이계원 조선대학교 경영경제연구소 2002 經營經濟硏究 = Management and economics research Vol.25 No.1

우리나라 거래소시장에서 투자주체별 매매행태에 관한 연구

이계원 朝鮮大學校 經營經濟硏究所 2003 經營經濟硏究 = Management and economics research Vol.26 No.2

美國의 聯邦所得稅에 관한 小考

李季源 조선대학교 경영경제연구소 1996 經營經濟硏究 = Management and economics research Vol.19 No.2