Fig. 5From: Tin and Oxygen-Vacancy Co-doping into Hematite Photoanode for Improved Photoelectrochemical Performancesa J-V curves. b Transient current density at 1.23 VRHE under chopped one-sun illumination. The calculated transfer efficiencies are also indicated as a percentage. c The IPCE spectrum at 1.23 VRHE. d The normalized photocurrent at 1.23 VRHE of the Sn-doped hematite photoanode with post-RTPBack to article page