Figure 5.

Schematic cross section of a radial p-n junction core-shell nanowire solar cell. Light is incident on the top surface. The light gray area is n type; the dark gray area is p type (Reused with permission from Ref. [131]. Copyright 2005, American Institute of Physics.)

Yu and Chen Nanoscale Research Letters 2008 4:1-10   doi:10.1007/s11671-008-9200-y