β-NaYF4:Er3+ nanocrystal films as a spectral converter to improve photoconversion efficiency of crystalline silicon solar cells

Sanghun Woo, John A. Stride, Peter J. Reece, Shujuan Huang, Richard P. Corkish, Gavin J. Conibeer

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

Abstract

In order to increase photocurrents of crystalline silicon solar cells through modification of the solar spectrum, we have investigated the upconversion effect of NaYF4:Er3+ nanocrystals. The upconverting layers of NaYF4:Er3+ nanocrystals were prepared by spin casting and post-soaking processes. The material characterization and the upconversion spectroscopy were carried out as functions of the erbium doping concentration and the film thickness. The effect of the laser density on the optimal ratio of trivalent erbium against trivalent yttrium has also been investigated using power dependent upconversion spectroscopy at various doping ratios. Through this study, optimized upconverting nanocrystals and fabrication methods to minimize the thickness of upconverting films have been investigated and achieved.

Original languageEnglish
Title of host publication2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1926-1929
Number of pages4
ISBN (Electronic)9781479932993, 9781479932986
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event39th IEEE Photovoltaic Specialists Conference, PVSC 2013 - Tampa, FL, United States
Duration: 16 Jun 201321 Jun 2013

Publication series

Name
ISSN (Print)0160-8371

Conference

Conference39th IEEE Photovoltaic Specialists Conference, PVSC 2013
CountryUnited States
CityTampa, FL
Period16/06/1321/06/13

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