A new solution-processable small-molecule donor material, named DRBDT3, comprised of oligobenzo[l,2-b：4,5-b＇] dithio- phene as the backbone and 3-ethyl-rhodanine as the end-capped group has been designed and synthes...A new solution-processable small-molecule donor material, named DRBDT3, comprised of oligobenzo[l,2-b：4,5-b＇] dithio- phene as the backbone and 3-ethyl-rhodanine as the end-capped group has been designed and synthesized for application in organic photovoltaic cells. The oligobenzodithiophene derivative exhibits an absorption band from 300 to 640 nm. The film of DRBDT3 shows highly long-range ordering assembly and high mobility of 1.21×10^-4 cm^2 V^-1 s^-1. The new molecule shows a deep highest-occupied molecular orbital energy level. The device based on DRBDT3 as the donor and PC71BM as the acceptor exhibits a power conversion efficiency of 4.09% with a high open-circuit voltage of 0.99 V under AM. 1.5G illumination （100 mW cm^-2）.展开更多
As the application of orbital angular momentum(OAM) of photon quantum in quantum communication, the OAM photon quantum interface for the transmission wavelength from the telecom communication quantum information stora...As the application of orbital angular momentum(OAM) of photon quantum in quantum communication, the OAM photon quantum interface for the transmission wavelength from the telecom communication quantum information storage in visible regime is required. Here we demonstrate the efficiency enhancement for the OAM photon quantum interface based on the frequency upconversion from telecom wavelength to visible regime by sum-frequency generation. The infrared photons at 1 558 nm carrying different OAM values could be converted to the visible regime at 622.2 nm with the optimal efficiency via adjusting the pump beam waist radius and intensity.展开更多
基金supported by the National Basic Research Program of China(2014CB643502)the National Natural Science Foundation of China(51373078)the Program for Changjiang Scholars and Innovative Research Team in University(IRT1257)
文摘A new solution-processable small-molecule donor material, named DRBDT3, comprised of oligobenzo[l,2-b：4,5-b＇] dithio- phene as the backbone and 3-ethyl-rhodanine as the end-capped group has been designed and synthesized for application in organic photovoltaic cells. The oligobenzodithiophene derivative exhibits an absorption band from 300 to 640 nm. The film of DRBDT3 shows highly long-range ordering assembly and high mobility of 1.21×10^-4 cm^2 V^-1 s^-1. The new molecule shows a deep highest-occupied molecular orbital energy level. The device based on DRBDT3 as the donor and PC71BM as the acceptor exhibits a power conversion efficiency of 4.09% with a high open-circuit voltage of 0.99 V under AM. 1.5G illumination （100 mW cm^-2）.
基金supported by the National Natural Science Foundation of China(Nos.61378033 and 91021014)the Shuguang Program(No.15SG22)by Shanghai Education Development Foundation and Shanghai Municipal Education Commissionthe Open Project of State Key Laboratory of Precision Spectroscopy
文摘As the application of orbital angular momentum(OAM) of photon quantum in quantum communication, the OAM photon quantum interface for the transmission wavelength from the telecom communication quantum information storage in visible regime is required. Here we demonstrate the efficiency enhancement for the OAM photon quantum interface based on the frequency upconversion from telecom wavelength to visible regime by sum-frequency generation. The infrared photons at 1 558 nm carrying different OAM values could be converted to the visible regime at 622.2 nm with the optimal efficiency via adjusting the pump beam waist radius and intensity.
