Advancement in searching of sustainable and cheap alternative sources of energy has increased, particularly in solar energy field. Enhancement in solar energy conversion requires design of new materials. Solar energy conversion devices such as photovoltaic, photo-electrochemical cells and photocatalysts require cheap and efficient materials [1]. Photon absorption to produces electronically excited states, electron-hole pair separations and mobility of charges to produce either current or fuel are the common physical operations necessary for the primary stages of energy conversion by the devices [2]. Properties of materials such as band gap, electron-hole pair lifetime and electron and hole