Therefore such multijunction cells, due to their spectrum splitting capability, have true potential for high conversion efficiency.

Thin film silicon, like no other thin film material, has been shown to be very useful in tandem and triplejunction solar cells. One of the promising materials is crystalline silicon. And also various kinds of hybrid solar cells based on silicon will be taken into account. In this chapter the principle of hybrid solar cells will be discussed. The development of organic-inorganic hybrid solar cells received widespread attention because of its improved performance due to nanoscale fabrication of inorganic components and put a path towards enhanced conversion efficiency by using the most part of solar spectrum and also cost-effective solar cells. Hybrid solar cell is an alternative type of the promising device, which combines the organic semiconductor as donor material together with inorganic semiconductor as acceptor material.

Improving the energy conversion efficiency of solar cells by developing the technology and concepts must be increasingly extended as one of the key components in our future global energy supplement, but, the main problem of photovoltaic modules are their rather high production and energy cost.

Recently, the demand of solar cells has rapidly been growing with an increasing social interest in photovoltaic energy.

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