Organic solar cell ppt

INTRODUCTION SOLAR CELL Solar cell or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic cells. ORGANIC SOLAR CELL The approach is based on solar cell made by entirely new materials, conjugated polymers . Photovoltaic effect discovered by Edmond Becquerel. First Silicon Solar Cell Bell Lab by Chapin, Fuller and Pearson.

Surge in research to harness solar energy.

Highest efficiency solar cells with η~40.

In the past year the price of fossil fuels has increased more than anytime in recent memory.

Because of this fact, the race for alternate energy sources to replace or lessen the use of fossil fuels has risen. Room temperature deposition – organics are compatible with plastic substrates. Disorder causes strong localization.

Carrier pairs strongly bound – not easily broken by field. Must use interface between two materials to dissociate carrier pairs. Best Research-Cell Efficiencies. An Overview of Solar Cell Technology. Organic Solar Cells : The Technology and the Future.

Materials Science and Engineering. Global Climate and Energy Project. John Benner provided the slides with the NREL logo. EE 6Advanced Semiconductor Devices.

Si (crystalline) cells : st generation cells. CdTe, CIGS, α-Si : nd generation cells. Dye cells, organic cells and related ones : rd generation cells.

Increased market focus on diversifying solar technologies. Three-layered organic solar cells with an interlayer of codeposited dyes of p-type CuPc and n-type TPyP, between the respective dye layers were also prepared and characterized. They showed increased power conversion efficiency, due to the efficient carrier photogeneration in the enlarged photoactive region from the . Low Cost “Plastic” Solar Cells.

Light emitting Field Effect Transistor (LEFET). Nuclear, hydroelectric, wind etc must all contribute to. Two problems that must be solved with solar: 1. When sunlight is absorbed by some materials, the solar energy knocks electrons loose from their atoms, allowing the electrons to flow through the material to produce electricity. This process of converting light (photons) to electricity . Conductivity studies were performed to determine the appropriate graphene concentration that will best accomplish charge percolation in the solar cells.

Ultimately, the goal of this project is to determine how graphene affects the efficiency of organic solar cells. Research Institute for Applied Physics and Astronomy (RIAPA), University of Tabriz, Tabriz, Iran. Department of Solid State Physics, Faculty of Physics, University of Tabriz, Tabriz, Iran. A short history of solar cells. Principle and device configuration.

A newer thin film approach: organic solar cells. They can be deposited on plastic sheets an hence, are of low weight and mechanically flexible. Due to the large number of organic semiconducting materials available, organic solar cells can be fabricated in almost any color or even semi- transparently.