نویسندگان
1 پژوهشکده علوم و فناوری نانو، دانشگاه صنعتی شریف، تهران
2 پژوهشکده فناوری نانو و مواد پیشرفته، پژوهشگاه مواد و انرژی، کرج
3 دانشکده فیزیک، دانشگاه صنعتی شریف، تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Light-energy conversion by photoelectrochemical cells has been extensively studied in the past 50 years using various combinations of semiconductors. Organic–inorganic perovskites have recently attracted increasing attention as light absorber. A direct band gap, strong light absorption, and high carrier mobility make them excellent absorber in solar cells. The morphology, stoichiometry and crystallinity of perovskites have significant effect on the device performance significantly, then deposition techniques are critical to achieve high efficiency solar cells. Efficiency of perovskite solar cells improve from 9 to 15 in two years due to change of deposition method. In this research, the two step technique was employed for the deposition of perovskite films. Different parameters of this method such as TiO2 thickness, concentration of the CH3NH3I solution and dipping time in the CH3NH3I solution were optimized. Finally, in optimized condition, we obtained a power conversion efficiency of 11.9.
کلیدواژهها [English]
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