Design of Narrow-Gap<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>TiO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>: A Passivated Codoping Approach for Enhanced Photoelectrochemical ActivityYanqin Gai, Su‐Huai Wei, Jingbo Li et al.|Physical Review Letters|2009Cited by 772