Evolution of the external quantum efficiency of Si-based PV minimodules with encapsulated down-shifters and aged under UV radiation

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

“…The synthesis and characterization of [Eu 2 (bz) 4 (tta) 2 ( phen) 2 ] (1), [Gd 2 (bz) 4 (tta) 2 ( phen) 2 ] (2), [EuTb(bz) 4 (tta) 2 ( phen) 2 ] (3), [EuGd(bz) 4 (tta) 2 ( phen) 2 ] (4), [Eu 1,2 Gd 0,8 (bz) 4 (tta) 2 ( phen) 2 ] (5) and [Eu 1,6 Gd 0,4 (bz) 4 (tta) 2 ( phen) 2 ] ( 6) is a continuation of our studies in the photovoltaics (PV) applications of [Eu 2 (bz) 6 ( phen) 2 ] and [Eu(tta) 3 ( phen)]. 2,3,22,[52][53][54] The excellent luminescent properties of the latter are known for more than 50 years, 28 and the former is dinuclear and also very luminescent with the benzoate acting as terminal and bridging ligand. Despite the high luminescence of [Eu 2 ( phen) 2 (bz) 6 ], its absorbance is very low above 300 nm and, therefore, with limited applications as a down-shifter in PV.…”

“…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.…”

Exploiting the Optical Limits of Thin‐Film Solar Cells: A Review on Light Management Strategies in Cu(In,Ga)Se2

“…Luminescent DS/DC layers can potentially substitute the conventional polymeric encapsulation layers, while maintaining the protective and transparency properties. [239][240][241] Furthermore, by the conversion of UV radiation, the DS/DC layer can reduce the polymeric layer photodegradation, consequently improving the PV module lifetime. [239] Nonetheless, a DS/DC layer must satisfy certain requirements for an efficient implementation in a PV device.…”

Intrinsic characteristics of Si solar cells coated with thick luminescence down-shifting sol–gel glass films

“…13) UV-induced degradation in perovskite-based PVs and ethylene vinyl acetate (EVA) films in PV modules can be suppressed by applying LDS or LDC effects. 14) Several types of LDS materials were applied for Si, 1-3) III-V 4,5) and perovskite [6][7][8] single and multi-junction 9) solar cells. Substances with a large Stokes shift, a high quantum efficiency, an excellent photostability, manipulable absorption and emission wavelengths are preferable as LDS materials.…”