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P3HT, BDT-3T Polymer 고분자 유기박막태양전지에서의 안정도 및 효율감소에 대한 고찰
선욱 ( Wook Sun ),이경균 ( Kyeong K. Lee ),이성구 ( Sung Koo Lee ),이효수 ( Hyo Soo Lee ),임은희 ( Eun Hee Lim ) 한국공업화학회 2010 응용화학 Vol.14 No.2
In this writing, in order to understand stability/degradation in organic solar cell devices, the device stability of poly(3-hexylthiophene) P3HT and poly(benzo[1,2-b:4,5-b` ]dithiophene- alt-terthiophene (BDT-3T) is discussed. The OPVs were fabricated using the polymers and [6,6]-phenyl-C61-butyricacidmethylester (PC[60]BM) as donor and acceptor, respectively. The effect of O(2) on device stability was examined by keeping the P3HT and BDT-3Tdevices in N(2) and airand the humidity was controlled by introducing getter on encapsulation of device. The experiment was done until thousands of hours. The device stabilityof new copolymer BDT-3T was comparable to that of P3HT.
세 가지 물질 블랜딩을 통한 유기태양전지 효율 증대에 관한 연구
김한솔 ( Han Sol Kim ),선욱 ( Wook Sun ),이경균 ( Kyeong K. Lee ),이성구 ( Sung Koo Lee ),임은희 ( Eun Hee Lim ) 한국공업화학회 2010 응용화학 Vol.14 No.2
In this work, new conjugated small molecule and polymer based on benzo [1,2-b: 4,5-b`] dithiophene (BDT) and thiophene were successfully synthesized via Suzuki and Stillcoupling reactions, respectively. Using these new materials, we introduced the ternary blended system into the donor and acceptor blended films. The device performances of organic photovoltaic cells can be improved by addition of the third component. The effect of third component on the photovoltaic properties was systematically investigated by UV-vis absorption and photoluminescence (PL) spectra.
Tetrazine/DPP를 갖는 유기태양전지용 신규 단분자에 관한 연구
김진아 ( Jin A Kim ),현지나 ( Ji Na Hyun ),이경균 ( Kyeong K. Lee ),이성구 ( Sung Koo Lee ),임은희 ( Eun Hee Lim ) 한국공업화학회 2011 응용화학 Vol.15 No.2
Organic photovoltaic cells (OPVs) have attracted considerable attention due to their low cost, light-weight and flexible characteristics. Small molecules have advantages of welldefined structure and easy synthesis. In this work, new tetrazine, DPP, and furan-based oligomers for organic solar cell were synthesized by Suzuki coupling reaction. The structures were confirmed by NMR and optical and electronic properties were investigated by UV- vis absorption.
트리아졸 그룹이 도입된 카바졸-티오펜계 고분자의 합성과 유기태양전지 특성 변화에 관한 연구
임은희 ( Eun Hee Lim ),백인우 ( In Woo Baek ),이경균 ( Kyeong K. Lee ),이성구 ( Sung Koo Lee ) 한국공업화학회 2010 응용화학 Vol.14 No.2
In this paper, we have introduced an electron-deficient triazole (Tz) unit into the fluorene- thiophene-based copolymer backbone. The copolymers were successfully synthesized by Suzuki coupling polymerization. Interestingly, the addition of triazole unit increased the photovoltaic properties of the resulting polymer. Furthermore, the device performance was improved by thermal annealing process.