Fig. 5: Application of TMMCs to optoelectronic devices. | npj 2D Materials and Applications

Fig. 5: Application of TMMCs to optoelectronic devices.

From: Ultra-thin 2D transition metal monochalcogenide crystals by planarized reactions

Fig. 5

a Raman spectra after varying duration of ozone exposure, indicating high environmental stability. b Optical micrograph of continuous Cu2S films (tears in the film expose the substrate and are due to the transfer process), c current-voltage characteristics for continuous Cu2S film under dark and illuminated conditions, d time evolution of photocurrent under pulsed illumination.

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