NANO LETTERS
Constructing Ordered Sensitized Heterojunctions: Bottom-Up Electrochemical Synthesis of p-Type Semiconductors in Oriented n-TiO2 Nanotube Arrays
2009 Vol. 9, No. 2 806-813
Qing Wang,† Kai Zhu, Nathan R. Neale, and Arthur J. Frank* National Renewable Energy Laboratory, Golden, Colorado 80401-3393 Received November 19, 2008
ABSTRACT Fabrication of efficient semiconductor-sensitized bulk heterojunction solar cells requires the complete filling of the pore system of one semiconductor (host) material with nanoscale dimensions (