Why are organic solar cells less efficient?

The geminate e-h pairs are though too tightly bound to be separated by the built-in field in the solar cell. This, plus the low mobility of the free carriers are the main reasons why the efficiency of the organic photovoltaic cells is so low.

What are the advantages and disadvantages of organic solar cells?

➨The efficiency of organic solar cells is less (about 5\%) compare to silicon solar cells (about 15\%). They are stable in the dark but degrade in the light conditions. Moreover as electricity can not flow very easily in organic solar cells (OSCs), its efficiency is limited.

What are OPV cells?

Organic photovoltaic cells generate electricity from the sun using ultra-thin films of lightweight, strong and flexible photoactive polymers.

What advantages are there in organic polymer PV cells?

Organic photovoltaics (OPV) is a rapidly increasing new solar cell technology. Among its advantages can be included its lightweight nature, large area coverage and low-cost of manufacturing. OPV are thin-filmed solar cells with the possibility of storing larger amounts of solar energy than their predecessors.

What are the disadvantages of organic solar cells?

The main disadvantages associated with organic photovoltaic cells are low efficiency, low stability and low strength compared to inorganic photovoltaic cells such as silicon solar cells.

How do organic photovoltaic cells work?

A typical organic solar cell consists of two semiconducting layers made of plastic polymers and other flexible materials. The cell generates electricity by absorbing particles of light, or photons. The exciton splits, allowing the electron to move independently to a hole created by another absorbed photon.

What are the drawbacks of photovoltaic solar energy?

Disadvantages of Solar PV – in a nutshell As in all renewable energy sources, solar energy has intermittency issues; not shining at night but also during daytime there may be cloudy or rainy weather. Consequently, intermittency and unpredictability of solar energy makes solar energy panels less reliable a solution.

What are photovoltaic cells made out of?

Photovoltaic cell can be manufactured in a variety of ways and from many different materials. The most common material for commercial solar cell construction is Silicon (Si), but others include Gallium Arsenide (GaAs), Cadmium Telluride (CdTe) and Copper Indium Gallium Selenide (CIGS).