NATURE MATERIALS
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	Nature Materials 4, 455–459 (2005)
	Nanowire dye-sensitized solar cells
	MATT LAW, LORI E. GREENE, JUSTIN C. JOHNSON, RICHARD SAYKALLY and PEIDONG YANG Nature Materials AOP Published online: 15 May 2005 | doi:10.1038/nmat1387
	The nanowire dye-sensitized cell, based on a ZnO wire array. a, Schematic diagram of the cell. Light is incident through the bottom electrode. b, Typical scanning electron microscopy cross-section of a cleaved nanowire array on FTO. The wires are in direct contact with the substrate, with no intervening particle layer. Scale bar, 5 m. c, Magnified view of the oriented wires. In this array, wire length and diameter vary from 16 to 17 m and 130 to 200 nm, respectively. Scale bar, 500 nm. d, Typical top view of a single nanowire, showing its faceting, surface texture and a slight taper to its tip. Scale bar, 50 nm. e, Wire length against diameter with (circles) and without (triangles) PEI added to the growth bath. Lines are least-squares fits to the data, and error bars represent one standard deviation. previous | next
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