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Po-Hsun Wang,Hsu-Feng Lee,Yi-Chiang Huang,Yi-Jiun Jung,Fang-Lin Gong,Wen-Yao Huang 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.4
In the decision on the pros and cons of the optical and electrical properties of organic solar cells, the morphology has proven to be very important. Easy to change the morphology via adding a small amount of additive, because proton dissociation constant is the main reason for their application. In this study, the use of poly(3-hexylthiophene) and [6,6]-phenyl C61-butyric acid methyl ester as the donor and acceptor materials, and were subsequently doped with different quantity of 4,4'-sulfonyldiphenol, 4,4'-dihydroxybiphenyl, biphenyl-4,4'-dithiol. When the proton dissociation constant is higher and lower respectively, the morphology reveals earthworms-like and fiber-like. For the reason that when the additive is biphenyl-4,4'-dithiol, it can improve the power conversion efficiency of about 27% and the incident photon-to-current conversion efficiency of about 12%.
Short-term, Multi-center Prospective Clinical Study of Short Implants Measuring Less Than 7mm
Kim, Young-Kyun,Yi, Yang-Jin,Kim, Su-Gwan,Cho, Yong-Seok,Yang, Choon-Mo,Liang, Po-Chin,Chen, Yu-Yal,I, Lee-Long,Sim, Christopher,Tan, Winston,Ser, Go Wee,Yue, Deng,Yi, Man,Ping, Gong Korean Academy of Dental Science 2010 Journal of korean dental science Vol.3 No.1
Objective : This prospective study sought to verify the stability of three types of short implants measuring 7mm or less. Materials and methods : Implants measuring 7mm or less were placed in patients at multicenter dental clinics in Korea, China, Taiwan, and Singapore. Initial stability, intraoperative and postoperative complications, crestal bone loss, and survival rate of the implant were prospectively evaluated. Results : The primary stability of a 6-mm implant was lower than that of a 7-mm implant. The marginal bone loss of short implants measuring less than 7mm was minimal. Complications such as wound dehiscence, implant mobility, and peri-implant mucositis developed, and these were associated with initial implant failure. The short-term survival rate of 6-mm implant was 93.7%, and that of 7-mm implant, 96.6%. Conclusion : Short implant for the mandible with insufficient height for the residual ridge can be selectively used. Poor primary stability and wound dehiscence can cause osseointegration failure and alveolar bone loss.
Short-term, Multi-center Prospective Clinical Study of Short Implants Measuring Less Than 7mm
Young-Kyun Kim,Yang-Jin Yi,Su-Gwan Kim,Yong-Seok Cho,Choon-Mo Yang,Po-Chin Liang,Yu-Yal Chen,Lee-Long I,Christopher Sim,Winston Tan,Go Wee Ser,Deng Yue,Man Yi,Gong Ping 대한치의학회 2010 Journal of korean dental science Vol.3 No.1