Abstract
The composite of α-Fe2O3/Zn2SnO4 was synthesized via a sol–gel route. Photoelectric properties are investigated by surface photovoltage spectroscopy and electric field-induced surface photovoltage spectroscopy. The photovoltaic response for the composite with the molar ratio 4 : 1 of α-Fe2O3 to Zn2SnO4 without bias is similar to that for the pristine α-Fe2O3 under positive bias. The results show that the modification of Zn2SnO4 can significantly improve the surface photovoltaic response of α-Fe2O3. The enhanced photogenerated charges separation could be ascribed to the good contact and energy level matching between α-Fe2O3 and Zn2SnO4. The high electron mobility and low rate of electron–hole recombination in Zn2SnO4 are also responsible for the improved photoelectric properties of α-Fe2O3.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
