Facile Formation of Sulfurized Nanorod‐Like ZnO/Zn(OH)2 and Hierarchical Flower‐Like γ‐Zn(OH)2/ϵ‐Zn(OH)2 from a Green Synthesis and Application as Luminescent Solar Concentrator

Author:

Rodrigues Aline Varella1ORCID,Onishi Bruno Seiki Domingos1ORCID,Ribeiro Sidney José Lima1ORCID

Affiliation:

1. Department of Analytical, Physical, and Inorganic Chemistry Institute of Chemistry at São Paulo State UNESP University Prof. Francisco Degni, n. 55 14800-060 Araraquara-SP Brazil

Abstract

AbstractThis research endeavors to overcome the significant challenge of developing materials that simultaneously possess photostability and photosensitivity to UV‐visible irradiation. Sulfurized nanorod (NR)‐like ZnO/Zn(OH)2 and hierarchical flower‐like γ‐Zn(OH)2/ϵ‐Zn(OH)2 were identified from XRD diffraction patterns and Raman vibrational modes. The sulfurized material, observed by FEG‐SEM and TEM, showed diameters ranging from 10 and 40 nm and lengths exceeding 200 nm. The S2− ions intercalated Zn2+, modulating NRs to dumbbell‐like microrods. SAED and HRTEM illustrated the atomic structure in (101) crystal plane. Its direct band gap of 3.0 eV was attributed to the oxygen vacancies, which also contribute to the deep‐level emissions at 422 and 485 nm. BET indicated specific surface area of 4.4 m2 g−1 and pore size as mesoporosity, which are higher compared to the non‐sulfurized analogue. These findings were consistent with the observed photocurrent, photostability and photoluminescence (PL), further supporting the suitability of sulfurized NR‐like ZnO/Zn(OH)2 as a promising candidate for Luminescent solar concentrators (LSC)‐photovoltaic (PV) system.

Publisher

Wiley

Subject

Physical and Theoretical Chemistry,Atomic and Molecular Physics, and Optics

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