本研究主要應用微波電漿化學輔助氣相沈積、沈浸法及溶膠凝膠法調製而成的溶液來成長奈米接枝碳管並應用於有機太陽能電池,並於一次成長之奈米碳管上成長二次接枝碳管之方法,藉此技術用以提高碳管之比表面積,而此立體空間之奈米結構,預期可成長出媲美甚至超越奈米碳角的比表面積特性。同時,亦利用不同之碳管形貌及不同觸媒層作為有機太陽能電池之導電層,進而從中挑選出具有最佳電子電洞傳導率之碳管形貌。 此外,本研究的應用重點即在於製作一有機/奈米碳管接枝材料太陽能電池,其中半導體型態的奈米碳管接枝材料的加入,目的是在於利用其一維結構之電子傳輸特性優良,使有機太陽電池光電轉換效率提升,已有2.5%的光電轉換效率之提升。
This research is based on MPCVD to grow a brand new type of CNTs. For the outstanding electric conductivity of CNTs, it was used to be put into a self-made organic solar cell in order to increase the light-electric efficiency. By using the submergence technique, the sol-gel is able to attach to the first-time grown CNTS and form a thin layer as a pretreatment for the second-time grown CNTs. Moreover, by using this technique, a brand new type of CNTs is able to be formed which can be compared with carbon nanohorns. Based on the research, three-dimensional structure CNTs have a better electrical conductivity than the first-time grown CNTs. Furthermore, by using MPCVD different types of CNTs can be grown, then using a different catalyzer and applying these onto organic solar their effects can be discussed; by measuring the I-V curve to acknowledge that the brached CNTs can offer a higher electric conductivity. From the result of light-electric efficiency, it is clear that the organic solar cell with branched CNTs has a higher light-electric efficiency than first-time grown CNTs, about 2.956% higher.
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