Biological templates for antireflective current collectors for photoelectrochemical cell applications.
نویسندگان
چکیده
Three-dimensional (3D) structures such as nanowires, nanotubes, and nanorods have the potential to increase surface area, reduce light reflection, and shorten charge carrier transport distances. The assembly of such structures thus holds great promise for enhancing photoelectrochemical solar cell efficiency. In this study, genetically modified Tobacco mosaic virus (TMV1cys) was used to form self-assembling 3D nanorod current collectors and low light-reflecting surfaces. Photoactive CuO was subsequently deposited by sputtering onto these patterned nanostructures, and these structures were examined for photocurrent activity. CuO thicknesses of 520 nm on TMV1cys patterned current collectors produced the highest photocurrent density of 3.15 mA/cm(2) yet reported for a similar sized CuO system. Reflectivity measurements are in agreement with full-wave electromagnetic simulations, which can be used as a design tool for optimizing the CuO system. Thus the combined effects of reducing charge carrier transport distance, increasing surface area, and the suppression of light reflection make these virus-templated surfaces ideal for photoelectrochemical applications.
منابع مشابه
Synthesis and Characterization of Indoline-based organic sensitizers for photoelectrochemical cells
In this paper we designed and prepared three free-metal organic days Dye 1, Dye 2 and Dye 3 based on indoline with n-phenly substituents iminodibenzyl as the electron donor group. We used cyanoacrylic acid substituent as the electron acceptor anchoring group in organic dyes. The proposed dyes were prepared from iminodibenzyl as the starting material by standard reactions and characterized by di...
متن کاملToxicity of Nanoparticles and an Overview of Current Experimental Models
Nanotechnology is a rapidly growing field having potential applications in many areas. Nanoparticles (NPs) have been studied for cell toxicity, immunotoxicity, and genotoxicity. Tetrazolium-based assays such as MTT, MTS, and WST-1 are used to determine cell viability. Cell inflammatory response induced by NPs is checked by measuring inflammatory biomarkers, such as IL-8, IL-6, and tumor necrosi...
متن کاملInvestigation of HF/H2O2 Concentration Effect on Structural and Antireflection Properties of Porous Silicon Prepared by Metal-Assisted Chemical Etching Process for Photovoltaic Applications
Porous silicon was successfully prepared using metal-assisted chemical etching method. The Effect of HF/H2O2 concentration in etching solution as an affecting parameter on the prepared porosity type and size was investigated. Field emission electron microscopy (FE-SEM) confirmed that all etched samples had porous structure and the sample which was immersed into HF/H2O2 withmolar ratio of 7/3.53...
متن کاملBiological properties, therapeutic and diagnostic applications of Samarium and Samarium nanoparticles
Lanthanides are a family of elements, commonly known as rare earth elements. Metal samarium as one of the most important member of this family, which plays very important roles in the diagnosis and treatment of various diseases, especially cancer. Several lanthanide complexes, samarium in particular, have shown anticancer effects on tumor cells. This paper is tried to review the biological prop...
متن کاملImproving Lithium-ion Battery Power and Energy Densities Using Novel Cathode Architectures and Materials By
Lithium-ion batteries are commonly used as energy storage devices in a variety of applications. The cathode architectures and materials have a large influence on the performance of lithium-ion batteries, namely power and energy densities. Three-dimensional bicontinuous cathode structures should help improve the charge and discharge rate performances, while maintaining a high energy capacity. By...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nano letters
دوره 12 11 شماره
صفحات -
تاریخ انتشار 2012