X1(Me O-TPD) is an inexpensive and easily synthesized π-conjugated molecule that has been used as a hole-transport material(HTM) in solid-state dye-sensitized solar cells(ssDSSCs), achieving relatively high efficienc...X1(Me O-TPD) is an inexpensive and easily synthesized π-conjugated molecule that has been used as a hole-transport material(HTM) in solid-state dye-sensitized solar cells(ssDSSCs), achieving relatively high efficiency. In this paper, we characterize the physicochemical properties of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone(DDQ) and show that it is a promising p-dopant in a spin-coating solution with X1 as the HTM. The doped ssDSSCs showed an increase in short-circuit current density from 5.38 mA cm^(-2) to7.39 mA cm^(-2), and their overall power conversion efficiency increased from 2.9% to 4.3%. Also, ssDSSCs with DDQ-doped X1 were more stable than the undoped samples, demonstrating that DDQ can act as a p-type dopant in X1 as an HTM for highly efficient, stable ssDSSCs.展开更多
基金financially supported by the National Natural Science Foundation of China (51661135021, 21606039, 21507008, 91233201, 21276044)supported by the National Natural Science Foundation of China
文摘X1(Me O-TPD) is an inexpensive and easily synthesized π-conjugated molecule that has been used as a hole-transport material(HTM) in solid-state dye-sensitized solar cells(ssDSSCs), achieving relatively high efficiency. In this paper, we characterize the physicochemical properties of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone(DDQ) and show that it is a promising p-dopant in a spin-coating solution with X1 as the HTM. The doped ssDSSCs showed an increase in short-circuit current density from 5.38 mA cm^(-2) to7.39 mA cm^(-2), and their overall power conversion efficiency increased from 2.9% to 4.3%. Also, ssDSSCs with DDQ-doped X1 were more stable than the undoped samples, demonstrating that DDQ can act as a p-type dopant in X1 as an HTM for highly efficient, stable ssDSSCs.
