CAJ | 학술논문

以苯并三噻吩共聚物(BTT-BTz)为给体材料,具有不同能级结构的富勒烯衍生物为受体材料,通过共混方式制备光敏薄膜,并研究受体材料的能级结构对光伏器件开路电压(Voc )、短路电流(J sc )、填充因子(FF)和电池效率(PCE)的影响.结果表明：当 IC60 BA 为电子受体材料时,器件的Voc=1.06 V,但 Jsc较低,使得 PCE 仅为1.49%；当 PC60 BM 和PC70BM 为受体材料时,Voc分别为0.86 V和0.81 V,但Jsc较高,使得PCE 分别为3.22%和5.06%.
이분병삼새분공취물(BTT-BTz)위급체재료,구유불동능급결구적부륵희연생물위수체재료,통과공혼방식제비광민박막,병연구수체재료적능급결구대광복기건개로전압(Voc )、단로전류(J sc )、전충인자(FF)화전지효솔(PCE)적영향.결과표명：당 IC60 BA 위전자수체재료시,기건적Voc=1.06 V,단 Jsc교저,사득 PCE 부위1.49%；당 PC60 BM 화PC70BM 위수체재료시,Voc분별위0.86 V화0.81 V,단Jsc교고,사득PCE 분별위3.22%화5.06%.
The energy level of the electron acceptor plays an important role in bulk heteroj unction solar cells.A conj ugated polymer BTT-BTz as electron donor and fullerene derivatives PC70 BM,PC60 BM and IC60 BA as acceptor with different energy levels was studied,and the influence of the acceptor energy level on the open-circuit voltage (Voc ),short-circuit current density (J sc ),fill factor (FF)and power conversion efficiency (PCE)were investigated.The BTT-BTz/IC60 BA based device exhibited a highVoc of 1.06 V,but the poor PCE of 1.49% due to the lower Jsc.Although theVoc of the devices based on BTT-BTz/PC60 BM and BTT-BTz/PC70 BM is decreased,they displayed promising efficiencies of 3.2 2% and 5 .0 6%.