Vol 23, No 1 (2019) > MJT Intl Meeting on Collaborative Technologies >

Study of ZnO Nanospheres Fabricated via Thermal Evaporation for Solar Cell Application

Fatin Farisha Alia Azmi 1 , Bouchta Sahraoui 2 , Saifful Kamaluddin Muzakir 1

Affiliations:

  1. Material Technology Programme, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, Gambang 26300, Kuantan, Pahang, Malaysia
  2. University of Angers, UFR Sciences, Institute of Sciences and Molecular Technologies of Angers MOLTECH Anjou–UMR CNRS 6200, 2 Bd Lavoisier 49045 ANGERS cedex 2, France

 

Abstract: A solar cell is a device
that absorbs light energy to generate electrical energy. A typical example of a
solar cell is the quantum dot solar cell (QDSC), which consists of three main
components: (i) fluorophore: the component that absorbs light and generates
excited state electrons and holes, (ii) photoelectrode: the component that
transports the excited state electron and prevents recombination of excited
state electrons and holes, and (iii) electrolyte: the component that
replenishes the vacancy left by the excited electron in the hole. Despite the
increasing number of research in the QDSC field, to date, a device with
significant photovoltaic efficiency has not been developed. In this study, the
mechanism of electron transport in a zinc oxide (ZnO) photoelectrode was
investigated. Two ZnO layers were fabricated using thermal evaporation method
at different vacuum pressures (5 × 10-4and 5
× 10-5
Torr).
Two solar cells were fabricated using ZnO as photoelectrode, lead sulphide as
fluorophore, and a mixture of carboxymethyl cellulose and polyvinyl alcohol as
electrolyte. The cell which utilized the ZnO fabricated under 5 × 10-5
Torr showed the highest efficiency (h =
0.98%), with fill factor = 22.07%, short circuit current = 2.85 mA/m2,
and open circuit voltage = 80.719 mV.
Keywords: efficiency, fluorophore, thermal evaporation, photoelectrode, zinc oxide
Published at: Vol 23, No 1 (2019) pages: 11-15
DOI:

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