Soft devices were proposed with energy-efficient manufacturing and low reflectivity of nanostructure surface. As to the first device, low voltage organic thin film transistor with low temperature manufacturing is proposed. In addition to having low-temperature fabrication, these polymer blend gate dielectric materials have satisfied other stringent requirements for an optimal flexible device: excellent insulating properties, non-toxic, surface free of pin-hole defect, compatibility with organic semiconductors and mechanical flexibility. This process for existing contributors can make drastic changes via low-cost, low-temperature processing and pervasive electronic applications such as flexible displays and radio frequency identification (RFID) tags. As to the second device, two types of surface manufacturing are demonstrated with efficient antireflection. We demonstrate an innovative approach for the fabrication of self-organized, hollow-to-solid nanocone arrays, using a decoupling two-step anodization of Al/Ta interlayer on a substrate. The porosity of the hollow nanostructures is tunable by the deposited thickness of Ta film. In addition, we demonstrate that unique double-layered nanostructures comprising amorphous silicon nanograss (a-Si NG) on top of silicon nanofrustums (Si NFs) behave as almost perfect optical absorbers. The a-Si NG/Si NF structured materials exhibite ultralow reflectance and near-perfect optical absorption across a wide spectral range (300–800 nm); moreover, their responses toward transverse electric (TE)– and transverse magnetic (TM)–polarized incident light are almost indistinguishable over a wide range of angles of incidence (AOIs, from 20 to 60°), making them ideal optical absorber candidates for solar cell applications.

Facile manufacturing on energy-efficient devices with excellent flexibility and surface antireflection

256th National Meeting (2018)

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