Photo- and thermo-stable luminescent beads composed of Eu(III) complexes and PMMA for enhancement of silicon solar cell efficiency

• Photo- and thermo-stable luminescent beads composed of Eu(III) complex.
• The stability of the luminescent beads for industrial application was calculated to be ten years under air condition.
• Energy conversion efficiency of silicon solar cells attached EVA films with Eu(hfa)3(TPPO)2-beads increased approximately 2%.

Photo- and thermo-stable luminescent beads composed of Eu(hfa)3(TPPO)2 (hfa: hexafluoroacetylacetonate, TPPO: triphenylphosphine oxide) and PMMA (polymethylmethacryrate), Eu(hfa)3(TPPO)2-beads, have been reported for improvement of energy conversion efficiency on silicon solar cell. The photophysical properties of Eu(hfa)3(TPPO)2 and compared Eu(tta)3(TPPO)2 (tta: trifluoromethyl- thienylacetylacetonate) are characterized by the emission quantum yield, the emission lifetime, the radiative and the non-radiative rate constants. Photo- and thermo-stability of the beads with Eu(III) complexes in EVA (Ethylene Vinyl Acetate) are estimated under UV irradiation (Xenon lamp: 60 W/m2) and highly temperature (120 °C). The stability of the Eu(hfa)3(TPPO)2-beads for industrial application was calculated to be ten years under air condition. Energy conversion efficiency of silicon solar cells attached EVA films with Eu(hfa)3(TPPO)2-beads increased approximately 2%(10% → 10.2%) compared with EVA films contained with UV absorber. Photo- and thermo-stable Eu(hfa)3(TPPO)2-beads for silicon solar cells are demonstrated for the first time.

Photo- and thermo-stable luminescent beads composed of Eu(hfa)3(TPPO)2 (hfa: hexafluoroacetylacetonate, TPPO: triphenylphosphine oxide) and PMMA (polymethylmethacryrate), Eu(hfa)3(TPPO)2-beads, have been reported for improvement of energy conversion efficiency on silicon solar cell. Photo- and thermo-stability of the beads with Eu(III) complexes in EVA (Ethylene Vinyl Acetate) are estimated under UV irradiation (Xenon lamp: 60 W/m2) and highly temperature (120 °C). The stability of the Eu(hfa)3(TPPO)2-beads for industrial application was calculated to be ten years under air condition. Energy conversion efficiency of silicon solar cells attached EVA films with Eu(hfa)3(TPPO)2-beads increased approximately 2%(e.g. 10% → 10.2%). Photo- and thermo-stable Eu(hfa)3(TPPO)2-beads for silicon solar cells are demonstrated for the first time.Figure optionsDownload as PowerPoint slide