A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

• Doan Nhat Giang,
• Nhat Minh Nguyen,
• Duc Anh Ngo,
• Thanh Trang Tran,
• Le Thai Duy,
• Cong Khanh Tran,
• Thi Thanh Van Tran,
• Phan Phuong Ha La and
• Vinh Quang Dang

Beilstein J. Nanotechnol. 2023, 14, 1018–1027, doi:10.3762/bjnano.14.84

• nanoparticles and ZnO nanorods obtained via a simple and cost-effective synthesis process has great potential for optoelectronic applications. Keywords: CuO nanoparticles; heterojunction; optoelectronics; visible-light photodetector; ZnO nanorods; Introduction Optoelectronics is a field to accelerate the

• difficult to reach, which increases the required decay time [47]. To evaluate the photodetector performance, some essential parameters are considered. The responsivity (R) is used to determine the applicability of the visible-light photodetector. R, which is defined as the photocurrent divided by the

• the Ag electrodes and generate the photocurrent, while holes accumulate near the surface of ZnO NRs to desorb ionized oxygen and release gaseous oxygen: Conclusion In this report, a visible-light photodetector based on CuO NPs/ZnO NRs was fabricated by simple and time-saving methods. Spherical CuO