Nanowires for photodetection

Absorption of Light in Vertical III-V Semiconductor Nanowires for Solar Cell and Photodetector Applications

“…For efficient extraction of photogenerated charge carriers, the electrical design needs to be carefully optimized (see Figure 1b for an example of an axial p-i-n junction in a nanowire, with transparent conductive oxide (TCO) as top contact). However, this review focuses on the absorption of light, and we kindly refer the readers to other works for the electrical design of solar cells and photodetectors [14][15][16][17][18][19]. We wish, however, to mention that in solar cells, the photogenerated carriers must be extracted with a simultaneous voltage bias created by the solar cell itself, in order to give rise to a net electrical power output from the solar cell [14,15] (see Figure 1c).…”