Organic-semiconducting hybrid solar cell

Abstract

The embodiment of this invention lies on experimental evidence of photoconductivity activity of a hybrid solar cell, organic / chalcogenide. The device is made of thin layers of conductive indium-tin-oxide (ITO) on glass with a 100 nm layer of chalcogenide molybdenum di-sulfide (MoS2) and a thin layer of about ˜50 nm of complex organic compound assembled at room temperature. The device was tested to conventional electrical transport measurements in the regime of −1V to 1V under electromagnetic radiation simulator at 100 mW / cm2. Results indicate solar conversion efficiency of 2.48% and current density of 6.35 mA / cm2.

Description

STATEMENT OF GOVERNMENT INTEREST[0001]The U.S. Government has rights in this invention pursuant to User Agreement UNPUA No. 1177_07_2016 between Universidad Autónoma de Ciudad Juárez and National Technology & Engineering Solutions of Sandia, LLC, which manages and operates Sandia National Laboratories for the U.S. Department of Energy / National Nuclear Security Administration, under Contract No. DE-NA0003525.FIELD OF INVENTION[0002]The chalcogenides are a series of chemical compounds that contain an anion formed by an ampigen element (Group 16) and a metal element of electropositive character. Molybdenum disulfide (MoS2) is a crystalline inorganic chemical compound of sulfur and molybdenum and has a laminar hexagonal structure similar to graphene.[0003]The present invention relates to a solar cell made of layers including a first layer of amorphous glass substrate, a first layer of conductive indium-tin-oxide (ITO) on the first layer of glass, a layer of chalcogenide semiconductor on...

AI Technical Summary

Benefits of technology

The solar cell achieves a photoactivity efficiency of 2.48% and a current density of 6.35 mA / cm2 under electromagnetic radiation of 100 mW / cm2, demonstrating improved performance and chemical stability at high temperatures.

Problems solved by technology

The silicon-based photovoltaic panels, electrical storage batteries and other transport microscale devices capable to transform power sources has reach their limit on capacity, meaning efficiency, size to capacity ratio, manufacture cost, among other technical issues.

Organometallic compounds has become more attractive in the quest to replace conventional semiconducting and transport materials, due to its low cost, but in occasion there is a lack of chemical stability at temperatures above water boiling point (100° C.

Nowadays, they are well known, hybrid solar cells that incorporate layers of organic and inorganic material, and even compositions of organic and inorganic materials, most of which use materials such as indium tin oxide arranged on a glass substrate, however said state-of-the-art solar cells incorporate expensive metals and contaminants such as gold, silver or copper, and said cells are of complex manufacture, and none of said documents incorporate a layer of organic product, such as a thin layer of about - 50nm of complex organic compound solid black paste integrated by complex aromatic asphaltene-like molecules, said organic layer composed by complex aromatic carbon graphitic-like, in contact with a chalcogenide layer, specifically an layer of 100nm of chalcogenide molybdenum di-sulfide (MoS2).

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