Semiconductor nanostructures for antireflection coatings, transparent contacts, junctionless thermoelectrics and Li-ion batteries

Glynn, Colm; Osiak, Michal J.; McSweeney, William; Lotty, Olan; Jones, Kim; Geaney, Hugh; Quiroga-Gonzalez, Enrique; Holmes, Justin D.; O'Dwyer, Colm

Semiconductor nanostructures for antireflection coatings, transparent contacts, junctionless thermoelectrics and Li-ion batteries

Files

ECS223_Toronto__Colm_O'_Dwyer.pdf(2.04 MB)

Accepted version

Date

2013-10

Authors

Glynn, Colm

Osiak, Michal J.

McSweeney, William

Lotty, Olan

Jones, Kim

Geaney, Hugh

Quiroga-Gonzalez, Enrique

Holmes, Justin D.

O'Dwyer, Colm

Publisher

Electrochemical Society

Published Version

10.1149/05306.0025ecst

Abstract

Porous semiconductors structured top-down by electrochemical means, and from bottom-up growth of arrays and arrangements of nanoscale structures, are shown to be amenable to a range of useful thermal, optical, electrical and electrochemical properties. This paper summarises recent investigations of the electrochemical, electrical, optical, thermal and structural properties of porous semiconductors such as Si, In2O3, SnO2 and ITO, and dispersions, arrays and arrangements of nanoscale structures of each of these materials. We summarize the property-inspired application of such structurally engineered arrangements and morphologies of these materials for antireflection coatings, broadband absorbers, transparent contacts to LEDs that improve transmission, electrical contact and external quantum efficiency. Additionally the possibility of thermoelectric performance through structure-mediated variation in thermal resistance and phonon scattering without a p-n junction is shown through phonon engineering in roughened nanowires. Lastly, we show that bulk crystals and nanowires of p- and n-type doped Si are promising for use as anodes in Li-ion batteries.

Keywords

Semiconductor junctions , Antireflection coatings , Coatings , Contacts (fluid mechanics) , Dispersions , Electric properties , Lithium , Lithium batteries , Nanotechnology , Nanowires , Semiconductor growth , Silicon , Thermoelectricity , Broadband absorbers , Electrical contacts , External quantum efficiency , Nanoscale structure , Phonon engineering , Porous semiconductors , Semiconductor nanostructures , Thermoelectric performance

Citation

Glynn, C., Osiak, M., McSweeney, W., Lotty, O., Jones, K., Geaney, H., Quiroga-González, E., Holmes, J. D. and O'Dwyer, C. (2013) '(Invited) Semiconductor Nanostructures for Antireflection Coatings, Transparent Contacts, Junctionless Thermoelectrics and Li-Ion Batteries', ECS Transactions, 53(6), pp. 25-44. doi: 10.1149/05306.0025ecst