Tailoring the efficiency of 3D wire-shaped photovoltaic cells (WPVCs) by functionalization of solid-liquid interfacial properties

Abstract

An efficient 3D dye-sensitized photovoltaic microwire has been developed using thermally stable and highly conductive titanium microwires and carbon nanotube yarns (CNYs). Interaligned, ultrastrong, and flexible CNYs with excellent mechanical integrity and electrocatalytic property were successfully used as counter electrodes (CEs). The TiO 2 nanophase coated Ti-microwire acts as the working electrode (WE). The CEs were twisted around the WE to collect and transmit the photogenerated electrons from the outer circuit. The interface in between photoactive TiO 2 film and 3D conductive support has been optimized. The optimized 3D WPVC shows a 0.583% photon to energy conversion efficiency under an irradiation of AM 1.5 (100 mW cm À2 ). Cells with various lengths were observed to attain a fill factor (FF) above 0.8. This work tested WPVCs under different working environments to assess their engineering potential.

High Performance Li-Ion Capacitor Laminate Cells Based on Hard Carbon/Lithium Stripes Negative Electrodes

“…In current circumstances of growing interest in environmental problems, the electrical energy storage devices for electric vehicles (EVs) and the hybrid electric vehicles (HEVs) have been tremendously developed. [1][2][3][4] The EVs and HEVs will supersede the gasonlinepowered vehicles to solve the environmental pollution issues. In recent years, enhanced numbers of various electrical power systems have been installed into the automobile.…”