Improved planar solar converter based on uranyl neodymium and holmium glasses [6]

Renata Reisfeld, Yehoshua Kalisky

Research output: Contribution to journalLetterpeer-review

63 Scopus citations

Abstract

The use of uranyl doped glasses for solar energy conversion and concentration was discussed by Reisfeld and Neuman1. While the UO2+2 ion is an efficient energy converter, its maximum emission peaking around 500 nm does not coincide with the maximum sensitivity of the existing solar cells which is around 700-1,000 nm. The use of Nd 3+ doped glasses for solar energy collectors was described by Levitt and Weber2. While the emission of Nd3+ peaking at 880 nm (4F3/24I9/2) and at 1.06 m (4F3/24I11/2) is ideal for matching with the maximum sensitivity of solar cells, its absorbance arising from the forbidden transition 4f-4f is low and the overlap of the absorption spectrum of Nd3+ with the solar spectrum is rather weak. To increase the operational efficiency of solar collectors, a maximum overlap between the absorption spectrum of the collector and the solar spectrum is required 3. In this report we suggest that glasses doped by uranyl and neodymium and uranyl and holmium increase the response to the solar spectrum, thus increasing the collection efficiency, and convert the absorbed light in the wide spectral range into the narrow fluorescence band at 1.06 m and 880 nm in uranyl-neodymium glasses and 660 nm (5F55I8) and 750 nm (5F4, 5S25I7) in the uranyl-holmium co-doped glasses.

Original languageEnglish
Pages (from-to)281-282
Number of pages2
JournalNature
Volume283
Issue number5744
DOIs
StatePublished - 1 Dec 1980
Externally publishedYes

ASJC Scopus subject areas

  • General

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