Stable organic field effect transistors(OFETs)based on copper phthalocyanine(CuPc)are reported using MoO_(3)/Al as source-drain top contacts.By annealing the fabricated device at 130℃ in air,the mobility and the stab...Stable organic field effect transistors(OFETs)based on copper phthalocyanine(CuPc)are reported using MoO_(3)/Al as source-drain top contacts.By annealing the fabricated device at 130℃ in air,the mobility and the stability of the OFETs can be significantly improved in comparison with the untreated device.The heat-treated devices without encapsulation show a device storage stability of nearly 400 h while the untreated one only 183 h.This improvement is suggested to be mainly attributed to the reduction of the contact barrier between CuPc and the electrode,as well as the better alignment of CuPc molecules via post annealing.展开更多
The photovoltaic performance of dye-sensitized solar cells （DSSCs） is enhanced by modifying the binary room tem- perature ionic liquid （RTIL） electrolyte with additives and iodine. The average photoelectric conver...The photovoltaic performance of dye-sensitized solar cells （DSSCs） is enhanced by modifying the binary room tem- perature ionic liquid （RTIL） electrolyte with additives and iodine. The average photoelectric conversion efficiency （PCE） of 6.39% is achieved. Through electrochemical impedance spectroscopy （EIS）, cyclic voltammetry scans and incident photon-to-current conversion efficiency （1PCE） data, the working principles are analyzed. The enhancement is mainly attributed to the improvement of short circuit current which is caused by the reduction of overall internal resistance of the devices. Durability tests are measured at room temperature, and the long-term stability performance can be maintained.展开更多
基金Supported by the National Natural Science Foundation of China(Nos 20974046,61077021,61076016)New Century Excellent Talents Funding from Ministry of Education in China(NCET-08-0697)the National Basic Research Program of China(No 2009CB930600).
文摘Stable organic field effect transistors(OFETs)based on copper phthalocyanine(CuPc)are reported using MoO_(3)/Al as source-drain top contacts.By annealing the fabricated device at 130℃ in air,the mobility and the stability of the OFETs can be significantly improved in comparison with the untreated device.The heat-treated devices without encapsulation show a device storage stability of nearly 400 h while the untreated one only 183 h.This improvement is suggested to be mainly attributed to the reduction of the contact barrier between CuPc and the electrode,as well as the better alignment of CuPc molecules via post annealing.
基金supported by the National Natural Science Foundation of China(No.61474064)
文摘The photovoltaic performance of dye-sensitized solar cells （DSSCs） is enhanced by modifying the binary room tem- perature ionic liquid （RTIL） electrolyte with additives and iodine. The average photoelectric conversion efficiency （PCE） of 6.39% is achieved. Through electrochemical impedance spectroscopy （EIS）, cyclic voltammetry scans and incident photon-to-current conversion efficiency （1PCE） data, the working principles are analyzed. The enhancement is mainly attributed to the improvement of short circuit current which is caused by the reduction of overall internal resistance of the devices. Durability tests are measured at room temperature, and the long-term stability performance can be maintained.
