Potentiostatic electrodeposition of cuprous oxide thin films

Abstract

Current-potential scam were used to investigate the electrodeposition of cuprous oxide thin films in an acetate bath. YJe found that a narrow potential domain, from 0 V vs SCE to -300 mV vs SCE, is available for the potentiostatic electrodeposition of cuprous oxide thin films and extension of this domain towards more cathodic potentials will result in theco-deposition of copper. These results were further verified by the X-ray diffraction measurements on the thin films formed by the electrodeposition a t various electrode potentials. Optical transmission studies revealed that electrodeposited cuprous oxide is a direct band gap semiconductor of 2.0 eV.

Preparation and Characterization of Cu₂O Thin Films by Electrodeposition

“…As energy crisis and the traditional energy of the serious pollution for environment, the development of renewable clean energy become one of the important strategy problem in the world.Solar energy is inexhaustible as clean energy, in the sum of the global energy consumption every year,only equivalent of the sun projects onto the surface of the earth in 40 minutes,therefore,the use of semiconductor materials make solar power is directly converted to electrical energy which become a hot topic.Cu 2 O is a non-toxic,low cost,and forbidden band width is about 1.9 eV,has a higher theoretical solar cell using efficiency (9%-11%).Cu 2 O is a great potential applications for solar cell semiconductor materials [1] ,Cu 2 O film can be preparation by electrodeposition [2] ,sol-gel [3 ],magnetron sputtering [4] and so on. Among these techniques, the electrodeposition has simple preparation technology,low cost, higher purity,suitable for large area growth of thin films and other advantages [5] .Another,film structure and thickness can also controlled.So the electrodeposition become one of the most compelling method.…”

Electrodeposition of n-type Cuprous Oxide Thin Films

“…We have investigated the possibility of depositing thin n-Cu 2 O films on conducting substrates using the method of electrodeposition (8)(9)(10)(11). The first step during the electrodeposition process of Cu 2 O films on the electrode will be the formation of Cu+ ions at the surface due to the cathodic reaction [1] given below (12,13).…”

Electronic states and local structures of Cu ions in electrodeposited thin films of Cu and Cu2O from X‐ray absorption spectra

“…Recently, thin films of the semiconductor Cu 2 O were made using a similar electrodeposition method, and the growing conditions and electrochemical properties of the electrodeposited Cu 2 O thin films were reported [14][15][16][17]. It has also been found that Cu 2 O films electrodeposited in slightly acidic aqueous baths give n-type photosignals in photoelectrochemical cells and solid-state devices [18][19][20].…”