Abstracts Book - IMRC 2018

• SC4-O020
SILICON SOLAR CELL WITH DOWN-CONVERSION PROPERTIES
USING EUROPIUM COMPLEX EMBEDDED IN COPOLYMER
Yasuhiro Matsumoto 1 , Gloria Lesly Jimenez Miranda 2 , Ciro Falcony Guajardo 3 , Rogelio Mendoza
Pérez 4 , Agustin Cortes 1 , V. M. Sánchez R. 1
1
Centro de Investigación y de Estudios Avanzados del IPN - CINVESTAV, Electrical Engineering,
Mexico. 2 Centro de Investigación y de Estudios Avanzados del IPN - CINVESTAV, Doctoral
Program in Nanoscience and Nanotechnology, Mexico. 3 Centro de Investigación y de Estudios
Avanzados del IPN - CINVESTAV, Department of Physic, Mexico. 4 Universidad Autónoma de la
Ciudad de México, Colegio de Ciencia y Tecnología, Mexico.
A highly luminescent europium complex was obtained with two different
ligands, succinimide (SI) and 2-thenoyltrifluoroacetone (TTA); which was
synthetized at different TTA concentrations. The photoluminescence (PL)
emission these materials corresponds to the characteristic inter-electronic
energy level transitions of the Eu 3+ ions. The EuL3TTA complex with the best PL
properties was embedded in a styrene butadiene copolymer (SBC) film,
produced by the casting method, obtaining similar PL behavior at different
concentrations, the highest intensity was observed at 1.2% (w/v) of EuL3TTA
complex and the external quantum yield of these composite films was
60.5%±2%. This complex copolymer was used for p/n junction crystalline-silicon
(c-Si) based solar cells in order to analyze the down-conversion effect. Currentvoltage
characteristics under irradiation, as well as the external quantum
efficiencies (EQE) are reported for the c-Si cells with and without europium
copolymer. For the solar cell made with europium copolymer, a strong EQE
enhancement was found in the range of 330 to 390 nm wavelength. Actually, we
are in the stage to compare and to determine the c-Si solar cell conversion
efficiency improvements.
Acknowledgment:
We acknowledge Mr. Miguel Angel Luna Arias for his technical assistance to
prepare part of the samples.
Keywords: Down-conversion, Solar cell, External quantum efficiency
Presenting authors email: ymatsumo@cinvestav.mx