Simultaneous phase and morphology controllable synthesis of copper selenide films by microwave-assisted nonaqueous approach

Copper selenide films with different phase and morphology were synthesized on copper substrate through controlling reaction solvent by microwave-assisted nonaqueous approach. The films were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The result showed that the pure films could be obtained using cyclohexyl alcohol or benzyl alcohol as solvent. The cubic Cu2−xSe dendrites were synthesized in cyclohexyl alcohol reaction system and hexagonal CuSe flaky crystals were obtained with benzyl alcohol as solvent.

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► Copper selenide films were synthesized by microwave-assisted nonaqueous.
► Copper foil and selenium powders were as raw materials.
► The phase and morphology of films were controlled by changing reaction solvent.
► The cubic Cu1−xSe dendrites were synthesized in cyclohexyl alcohol reaction system.
► Hexagonal CuSe flaky crystals were obtained with benzyl alcohol as solvent.