Organic photovoltaic devices and methods thereof.

Title

Organic photovoltaic devices and methods thereof.

Subject

Electrochemical, Radiational, and Thermal Energy Technology

Description

The invention provides a novel fabrication method to produce solar cells using water-based inks that can be readily used in roll-to-roll processing, ink-jet printing and other large-scale fabrication processes. The invention also provides OPV devices with significantly improved efficiency. The invention offers a no. of advantages over existing methods: (1) use of water dispersions instead of environmentally hazardous org. solvents, (2) use of semiconducting nanoparticles that allow control of the domain size and structure, (3) treatment of PEDOT:PSS using UV/Ozone allows film uniformity from aq. dispersions, (4) use of heat-IR radiation to make uniform films, (5) use of hole-blocking layer for increased fill factors (squareness of the I-V curve, the ratio between the max. power obtained and the max. power obtainable defined by the open circuit voltage and the short circuit current). [on SciFinder(R)]

Creator

Venkataraman, Dhandapani; Bag, Monojit Bag; Gehan, Timothy S.; Cutting, Christie Laurel.

Source

PCT Int. Appl.

Date

2015

Rights

Application: WO

Relation

Polymers Role: PRP (Properties) (conjugated; org. photovoltaic devices and methods thereof); Transparent films (electric conductors, oxides; org. photovoltaic devices and methods thereof); Counter electrodes; Electric current-potential relationship; Electron transfer; Heterojunction solar cells; Hole mobility; Nanoparticles; Organic solar cells; Semiconductor materials; UV radiation (org. photovoltaic devices and methods thereof); Electrically conductive films (transparent, oxides; org. photovoltaic devices and methods thereof); Electrodes (transparent; org. photovoltaic devices and methods thereof)

Language

written in English

Identifier

2015-US27436