Radial PN junction nanorod solar cells

Device physics principles and routes to fabrication in silicon

Brendan M. Kayes, Christine E. Richardson, Nathan S Lewis, Harry A. Atwater

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Citations (Scopus)

Abstract

We have developed quantitative device-physics models for a radial pn junction nanorod solar cell, that is, a cell which consists of densely packed nanorods attached to a conducting substrate, each nanorod with a pn junction in the radial direction. It is found that this novel design shows large improvements over the planar geometry so long as two conditions are satisfied: a) a planar solar cell made from the same material is collection limited, i.e. the diffusion length of minority carriers is too low to allow for collection of most or all of the light-generated carriers in the conventional planar geometry, and b) recombination in the depletion region is not too high, or, equivalently, the lifetime of carriers in the depletion region is not too short. In order to experimentally validate this concept, the vapor-liquid-solid (VLS) growth of silicon (Si) nanorods has been explored using metal catalyst particles that are not as deleterious to the minority carrier lifetime of Si as gold (Au), the most commonly used wire growth catalyst.

Original languageEnglish
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
Pages55-58
Number of pages4
Publication statusPublished - 2005
Event31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States
Duration: Jan 3 2005Jan 7 2005

Other

Other31st IEEE Photovoltaic Specialists Conference - 2005
CountryUnited States
CityLake Buena Vista, FL
Period1/3/051/7/05

Fingerprint

Nanorods
nanorods
Solar cells
Physics
solar cells
routes
Fabrication
Silicon
fabrication
physics
silicon
minority carriers
depletion
catalysts
Catalysts
Carrier lifetime
Geometry
carrier lifetime
geometry
diffusion length

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Control and Systems Engineering

Cite this

Kayes, B. M., Richardson, C. E., Lewis, N. S., & Atwater, H. A. (2005). Radial PN junction nanorod solar cells: Device physics principles and routes to fabrication in silicon. In Conference Record of the IEEE Photovoltaic Specialists Conference (pp. 55-58)

Radial PN junction nanorod solar cells : Device physics principles and routes to fabrication in silicon. / Kayes, Brendan M.; Richardson, Christine E.; Lewis, Nathan S; Atwater, Harry A.

Conference Record of the IEEE Photovoltaic Specialists Conference. 2005. p. 55-58.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kayes, BM, Richardson, CE, Lewis, NS & Atwater, HA 2005, Radial PN junction nanorod solar cells: Device physics principles and routes to fabrication in silicon. in Conference Record of the IEEE Photovoltaic Specialists Conference. pp. 55-58, 31st IEEE Photovoltaic Specialists Conference - 2005, Lake Buena Vista, FL, United States, 1/3/05.
Kayes BM, Richardson CE, Lewis NS, Atwater HA. Radial PN junction nanorod solar cells: Device physics principles and routes to fabrication in silicon. In Conference Record of the IEEE Photovoltaic Specialists Conference. 2005. p. 55-58
Kayes, Brendan M. ; Richardson, Christine E. ; Lewis, Nathan S ; Atwater, Harry A. / Radial PN junction nanorod solar cells : Device physics principles and routes to fabrication in silicon. Conference Record of the IEEE Photovoltaic Specialists Conference. 2005. pp. 55-58
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