Photoelectrochemical cells by design: 3D nanoporous CdO-CdSe architectures on ITO
- Photoelectrochemical cells by design: 3D nanoporous CdO-CdSe architectures on ITO
- Dipak V. Shinde; Iseul Lim; 이중기; Myung Mo Sung; Rajaram S. Mane; Sung-Hwan Han
- Photoelectrochemical; 3D design; nano-porous; CdO-CdSe
- Issue Date
- Journal of materials chemistry. A, Materials for energy and sustainability
- VOL 1, NO 35, 10436-10441
- We report on the synthesis of CdO–CdSe nanoporous architectures from porous CdO architectures by a
controlled solution anion exchange method. Monolithic CdCO3 micron sized crystals synthesized in the
first step were decomposed by calcination to evolve CO2 to form porous CdO crystals, having a similar
outer shape but with a tailored internal nanostructure. Controlled Se2- ion exchange with CdO crystals
yielded CdO–CdSe architectures with tunable composition and optoelectronic properties. Pearson's acid–
base concept is used as a guiding principle for controlling the morphology and composition of the
formed architectures. The photoelectrochemical properties of the system comprising CdO–CdSe
architectures were investigated at various stages of ion exchange intervals. CdO–CdSe architectures on
indium tin oxide (ITO) is a promising photoelectrode with excellent photovoltaic properties exhibiting a
short-circuit current density of 7.36 mA cm-2 under 1 Sun illumination.
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