Fotovoltaik İnce Film Olarak Elektrokimyasal Depozit Edilmiş Cu-Grafen ve Cu2O-Grafen Nanokompozitler

Yıl 2018, Cilt: 8 Sayı: 3, 201 - 209, 30.09.2018

Hülya Öztürk Doğan , Tuba Öznülüer Ümit Demir

https://doi.org/10.21597/jist.458627

Öz

Bu çalışmada, Au ve indiyum kalay oksit (ITO) elektrotlarda bakır iyonlarının ve grafen oksitin sulu

süspansiyonlarından eş zamanlı olarak indirgemesine dayanan Cu-grafen ve Cu2O-grafen nanoyapılarının

elektrokimyasal büyümesine yeni bir yaklaşım sunulmaktadır. Elde edilen kompozit nanoyapılar, taramalı elektron

mikroskobu (SEM), enerji dağılımlı spektroskopi (EDS), X-ışını kırınımı (XRD), fotolüminesans spektroskopi

(PL) ve foto-akım ölçümleri ile karakterize edildi. Deney sonuçları, Cu-grafen ve Cu2O-grafen kompozit film

yapılarının, uygulanan potansiyel ve deney ortamı ile kolayca kontrol edilebildiğini göstermektedir. Sentezlenen

Cu-grafen ve Cu2O-grafen nanokompozit fotoelektrotlar; iyi fotovoltaik özellikler sergilerler ve güneş enerjisi

dönüşümündeki uygulamalar için kullanılabilirler.

Anahtar Kelimeler

Bakır oksit, Elektrokimyasal olarak indirgenmiş grafen oksit, grafen temelli nanokompozit, fotovoltaik elektrot

Electrochemically Deposited Cu-Graphene and Cu2O-Graphene Nanocomposites for Thin Film Photovoltaics

Öz

In this study, we present a new approach to electrochemical growth of Cu-graphene and Cu2Ographene

nanostructures that are based on simultaneous reduction of copper ions and graphene oxide from an

aqueous suspension on Au and indium tin oxide (ITO) electrodes. The obtained composite nanostructures were

characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction

(XRD), photoluminescence spectroscopy (PL), and photocurrent measurements. The experimental results show

that structures of Cu-graphene and Cu2O-graphene composite films can be easily controlled by application potential

and experimental media. The resulting Cu-graphene and Cu2O-graphene nanocomposites photoelectrodes exhibits

good photovoltaic properties and could be used for applications in solar energy conversion.

Anahtar Kelimeler

Copper oxide, Electrochemically reduced graphene oxide, graphene based nanocomposite, photovoltaic electrode

Kaynakça

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