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Hybrid solar cells with β- and γ- gallium oxide nanoparticles

  • Marina García-Carrión*
  • , Julio Ramírez-Castellanos
  • , Emilio Nogales
  • , Bianchi Méndez
  • , Chang Chuan You
  • , Smagul Karazhanov
  • , Erik S. Marstein
  • *Corresponding author for this work
  • Complutense University
  • Institute for Energy Technology

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Herein, hybrid composite layers made of nanocrystalline β-Ga2O3 or γ-Ga2O3 within poly(3,4-ethylenedioxythiophene):-polystyrene (PEDOT:PSS) have been studied in order to be incorporated into hybrid solar cells. Structural, morphological, optical and electrical characterization has been carried out with X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL), PL excitation (PLE), cathodoluminescence (CL) and Raman spectroscopy. Bandgaps of 4.7 and 4.9 eV for γ- and β- phases, respectively, are obtained from PLE. Beside broad luminescence bands on 2.7–2.9 eV for the two phases, a band on 4.7 eV is obtained only for γ-Ga2O3, coincident with the observed PLE band. Minority carrier lifetimes are higher when γ-Ga2O3 nanoparticles are used for the hybrid system.

Original languageEnglish
Article number127088
JournalMaterials Letters
Volume261
DOIs
Publication statusPublished - 15 Feb 2020
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Gallium oxide
  • Hybrid solar cell
  • Luminescence
  • Nanoparticle
  • Poly(3,4-ethylenedioxythiophene):-polystyrene

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