Down-converter based on rare earth doped fluoride glass to improve Si-based solar cell efficiency

G. Alombert Goget; D. Ristic; A. Chiasera; S. Varas; M. Ferrari; G. C. Righini; B. Dieudonné; B. Boulard

doi:10.1117/12.886789

31 May 2011 Down-converter based on rare earth doped fluoride glass to improve Si-based solar cell efficiency

G. Alombert Goget, D. Ristic, A. Chiasera, S. Varas, M. Ferrari, G. C. Righini, B. Dieudonné, B. Boulard

Proceedings Volume 8069, Integrated Photonics: Materials, Devices, and Applications; 80690N (2011) https://doi.org/10.1117/12.886789
Event: SPIE Microtechnologies, 2011, Prague, Czech Republic

Abstract

The solar cells efficiency may be improved by better exploitation of the solar spectrum, making use of the downconversion mechanism, where one high energy photon is cut into two low energy photons. The choice of the matrix is a crucial point to obtain an efficient down-conversion process with rare-earth ions. When energy transfer between rare earth ions is used to activate this process, high emission and absorption cross sections as well as low cutoff phonon energy are mandatory. A low phonon energy host lattice reduces non-radiative transition rates leading to the increase of the luminescent quantum yield and of the energy transfer efficiency. Recently, some studies have demonstrated that fluoride and oxyfluoride glasses may be valid systems to support an effective quantum cutting process. As a fluoride material, the relatively low phonon energy, around 600cm^-1, of the ZLAG (70ZrF₄ 23.5LaF₃ 0.5AlF₃ 6GaF₃ in mol%) glass makes it highly suitable for applications involving energy transfers. In this study, attention is focused on the assessment of the energy transfer efficiency between the Pr³⁺ and Yb³⁺ ions in bulk fluoride glasses ZLAG.

Citation Download Citation

G. Alombert Goget, D. Ristic, A. Chiasera, S. Varas, M. Ferrari, G. C. Righini, B. Dieudonné, and B. Boulard "Down-converter based on rare earth doped fluoride glass to improve Si-based solar cell efficiency", Proc. SPIE 8069, Integrated Photonics: Materials, Devices, and Applications, 80690N (31 May 2011); https://doi.org/10.1117/12.886789

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available