A large-area luminescent downshifting layer containing an Eu³⁺ complex for crystalline silicon solar cells

Abstract

We present a large-area luminescent down-shifting layer consists of polyvinyl alcohol embedding a newly synthesized ternary Eu3+ complex. C-Si solar cell coated with this layer displayed an enhancement of ~15% in external quantum efficiency.

Highly luminescent mixed-ligand bimetallic lanthanoid(iii) complexes for photovoltaic applications

“…This phenomenon is particularly intense for Eu 3+ and Tb 3+ and leads compounds containing those ions to have multiple applications in fields such as LEDs, photovoltaics, temperature and UV sensing or bioimaging, to name a few. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Although the photoluminescence process can be efficient, lanthanoid 3+ ions themselves feature low absorption rates, limiting the emission intensity. However, the preparation of suitable lanthanoid ion complexes considerably enhances the photoluminescence inten-sity by the so-called antenna effect produced by organic sensitizers.…”

“…This phenomenon is of particular interest for photovoltaics (PV) since it simultaneously allows the conversion of inefficient UV photons into more efficient visible ones and protects the photovoltaic device from the UV radiation responsible for the ageing of the photovoltaic modules. 2,10,21,22 For these applications, the higher the quantum yield of the overall process, the greater the interest of the compound. The best way to incorporate these compounds in the PV technology consists of their inclusion in the ethylene-vinyl acetate (EVA) or polymethylmethacrylate (PMMA) films that cover the solar modules.…”

Photoluminescence Properties of Copolyimides Containing Naphthalene Core and Analysis of Excitation Energy Transfer between the Dianhydride Moieties

“…In addition, crystalline and multi-crystalline silicon (Si) solar cells, which are mainly used in practical applications, have low absorption coefficients and poor spectral sensitivity to sunlight in the ultraviolet (UV) region [29]. Therefore, phosphorescent materials exhibiting emissions at longer wavelengths than fluorescent materials are expected to be used as spectral conversion films that convert the UV light to the visible light in the longer wavelength range, in which Si solar cells have much higher spectral sensitivity [30].…”

Characterization of Plasmonic Scattering, Luminescent Down-Shifting, and Metal-Enhanced Fluorescence and Applications on Silicon Solar Cells

“…Materials must be selected carefully to minimize mismatch between the solar spectrum and the spectral absorption of solar cell (spectral losses). One approach to expand the usable range of light involves the application of a conversion layer, such as down conversion (DC) [18,19], down shifting (DS) [20,21], up conversion (UC) [22,23], and multi-junction tandem structures [24,25]. DC involves converting an incident high-energy photon (UV-blue wavelengths) into two or more photons of lower energy (within visible wavelengths).…”