TiO 2 nanoribbons were synthesized hydrothermally via the reaction of TiO 2 particles and NaOH solution. Their photovoltaic properties were studied by surface photovoltage spectroscopy (SPS) and electric field-induced...TiO 2 nanoribbons were synthesized hydrothermally via the reaction of TiO 2 particles and NaOH solution. Their photovoltaic properties were studied by surface photovoltage spectroscopy (SPS) and electric field-induced surface photovoltage spectroscopy (FISPS). Under the external field, new photovoltaic response bands were found from 375 nm to 550 nm. It is suggested that these response bands resulted from the surface states, which can be ascribed to the formation of steps and kinks in the TiO 2 nanoribbons.展开更多
Copper-tetra-4-(butyloxycarbonyl) phthalocyanine, copper-tetra-4-(octyloxycarbonyl) phthalocyanine and copper-tetra-4-(dodecoxycarboxyl) phthalocyanine were synthesized by the phase transfer catalysis reaction. The re...Copper-tetra-4-(butyloxycarbonyl) phthalocyanine, copper-tetra-4-(octyloxycarbonyl) phthalocyanine and copper-tetra-4-(dodecoxycarboxyl) phthalocyanine were synthesized by the phase transfer catalysis reaction. The reaction has several advantages in comparison with the previous carboxyl-esterified method, such as the milder conditions, the shorter reaction time(3—6 h), the higher yield(>95%), and so on. Because of the difference in the substituent group length of these compounds, the morphology and the congregation of the molecules in their casting films is different, leading to the different photoconductivities of them.展开更多
文摘TiO 2 nanoribbons were synthesized hydrothermally via the reaction of TiO 2 particles and NaOH solution. Their photovoltaic properties were studied by surface photovoltage spectroscopy (SPS) and electric field-induced surface photovoltage spectroscopy (FISPS). Under the external field, new photovoltaic response bands were found from 375 nm to 550 nm. It is suggested that these response bands resulted from the surface states, which can be ascribed to the formation of steps and kinks in the TiO 2 nanoribbons.
文摘Copper-tetra-4-(butyloxycarbonyl) phthalocyanine, copper-tetra-4-(octyloxycarbonyl) phthalocyanine and copper-tetra-4-(dodecoxycarboxyl) phthalocyanine were synthesized by the phase transfer catalysis reaction. The reaction has several advantages in comparison with the previous carboxyl-esterified method, such as the milder conditions, the shorter reaction time(3—6 h), the higher yield(>95%), and so on. Because of the difference in the substituent group length of these compounds, the morphology and the congregation of the molecules in their casting films is different, leading to the different photoconductivities of them.
