Photonic density of state (PDOS) enhancement by brillouin zone engineering

Sze Ming Fu, Yan Kai Zhong, Sheng Lun Yan, Nyan Ping Ju, Po Yu Chen, Ming Hsuan Kao, Chang Hong Shen, Jia Min Shieh, Yi Chun Lai, Peichen Yu, Albert Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The material absorption can be enhanced by increased photonic density of state(PDOS). Here we demonstrate that through the design in the Brillouin zone of nanophotonic light trapping structures, the PDOS can be effectively increased. The theoretical work using rigorously coupled wave calculation shows the increased spectral absorption and the optimal quasiguided mode excitations in terms of their quality factors and the number of excited modes. The experimental work is currently ongoing and the preliminary result confirms enhanced short circuit current if the PDOS is properly adjusted. Unlike random structures, the proposed Brillouin zone engineered structures are more feasible from modeling and device process viewpoints.

Original languageEnglish
Title of host publication2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479979448
DOIs
StatePublished - 14 Dec 2015
Event42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States
Duration: 14 Jun 201519 Jun 2015

Publication series

Name2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

Conference

Conference42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
CountryUnited States
CityNew Orleans
Period14/06/1519/06/15

Keywords

  • Brillouin zone
  • nanophotonic light trapping
  • photonic density of state (PDOS)
  • solar cell

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