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Title: Synthesis of Alloyed CdxZn1-xS Quantum Dots for Photovoltaic Applications
Authors: Solís Luna, Omar Eduardo
Rivas Martínez, Jesús Manuel
López Luke, Tzarara
Zarazua, Isaac
De la Torre y Ramos, Jorge
Esparza Salazar, Diego
Issue Date: 20-May-2020
Publisher: IEEE Journal of Photovoltaics
Abstract: This article describes the synthesis of Cdx Zn1- x S quantum dots prepared using the successive ionic layer adsorption and reaction method and incorporated into a photovoltaic device. The Cdx Zn1- x S quantum dots exhibit good optical and electrical properties. The photovoltaic device has the configuration TiO2 /Cd0.75 Zn0.25 S1 /ZnS. A photoconversion efficiency of 3.6% was obtained with this device. This efficiency corresponds to a 16% relative increment compared with a reference sample with the con- figuration TiO2 /Cd1 Zn0 S1 /ZnS. The improvement is associated with an increment in the open-circuit voltage (Voc) from 0.517 to 0.725 V. The corresponding short-circuit current density (Jsc) was reduced from 12.15 to 11.66 mA cm!2. Electrochemical impedance spectroscopy analyses confirm that the behavior of the device was due to a recombination rate reduction obtained as a result of surface passivation between the TiO2 layer and the CdxZnx-1S QDs interface.
ISSN: 21563381
Other Identifiers: info:eu-repo/semantics/publishedVersion
Appears in Collections:*Documentos Académicos*-- M. en Ciencias de la Ing.

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