BROWSE

Related Scientist

Researcher

나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
more info

Hot-electron-based solar energy conversion with metal-semiconductor nanodiodes

Cited 9 time in webofscience Cited 0 time in scopus
401 Viewed 53 Downloaded
Title
Hot-electron-based solar energy conversion with metal-semiconductor nanodiodes
Author(s)
Young Keun Lee; Hyosun Lee; Changhwan Lee; Hwang E.; Jeong Young Park
Publication Date
2016-06
Journal
JOURNAL OF PHYSICS-CONDENSED MATTER, v.28, no.25, pp.254006 -
Publisher
IOP PUBLISHING LTD
Abstract
Energy dissipation at metal surfaces or interfaces between a metal and a dielectric generally results from elementary excitations, including phonons and electronic excitation, once external energy is deposited to the surface/interface during exothermic chemical processes or an electromagnetic wave incident. In this paper, we outline recent research activities to develop energy conversion devices based on hot electrons. We found that photon energy can be directly converted to hot electrons and that hot electrons flow through the interface of metal-semiconductor nanodiodes where a Schottky barrier is formed and the energy barrier is much lower than the work function of the metal. The detection of hot electron flow can be successfully measured using the photocurrent; we measured the photoyield of photoemission with incident photons-to-current conversion efficiency (IPCE). We also show that surface plasmons (i.e. the collective oscillation of conduction band electrons induced by interaction with an electromagnetic field) are excited on a rough metal surface and subsequently decay into secondary electrons, which gives rise to enhancement of the IPCE. Furthermore, the unique optical behavior of surface plasmons can be coupled with dye molecules, suggesting the possibility for producing additional channels for hot electron generation. © 2016 IOP Publishing Ltd
URI
https://pr.ibs.re.kr/handle/8788114/2668
ISSN
0953-8984
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
Hot-electron-based solar energy conversion with metal-semiconductor nanodiodes.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse