Engineering the Surface Structure of MoS2 Nanosheets by Carbon-Doping with Rich Defects to Tune UV-Visible Light Absorption Property

A facile doping method utilizing inexpensive raw materials was proposed to achieve variation in optical bandgap and UV-visible light absorption property of MoS2 nanosheets. Carbon-assistant heating with degreasing cotton has demonstrated the development of carbon-doped MoS2 nanosheets with enhanced rich defects. The results obtained shown that modified MoS2 nanosheets with the lateral width of ~600 nm are exhibited shift of the intensively blue peaks of photo-luminescence (PL) comparing to those MoS2 nanosheets with a lateral dimension of larger than 1 μm. Optical bandgap of the carbon-doped MoS2 nanosheets was found to be broader than that of the pure MoS2 nanosheets and the prepared samples also exhibited a broadband UV-visible light absorption property.

High light absorption properties and optical structures in butterfly Heliophorus ila Lvcaenidae wing scales

High light absorption property based on the resonant nanostructures of butterfly Heliophorus ila Lvcaenidae wing scales.

Nano-multiwall cylinders array for ultra-broadband perfect absorption in visible regime: novel properties revealing

An extraordinary light absorption property of nano-multiwall cylinder array with a periodic structure is reported. The ultra-high absorption is independent of the incoming light on polarization state and insensitive in a broad angle range. We attribute the efficient light harvesting property of nano-multiwall cylinder array to the leaky-mode resonance. Influence of geometrical parameters of the structure such as wall cylinder height, width, and substrate thickness on absorbing performance is discussed. The proposed absorber will find its application in those areas related to solar energy harvesting.