TiO₂nanorod arrays hydrothermally grown on MgO-coated compact TiO₂for efficient perovskite solar cells

Abstract

We have demonstrated efficient, stable, and hysteresis-less mesoscopic perovskite solar cells employing TiO2nanorod arrays with MgO modification.

Improve Efficiency in Dye-Sensitized Solar Cell by Surface modification of TiO2 Photoelectrode by Spray Pyrolysis

“…In the previous reports [10,20] the use of ZnO or MgO coating on TiO 2 surface was found to reduce the recombination process. Growth techniques for example the doctor blade procedure [11], protect printout technique [12], anodization method [13] sol-gel approach [20] have became utilized in favour of the development of TiO 2 thin lms for application in DSCs. Kim et al [14] reported on exible and fabricated solar cells as dye-sensitized through ZnO-modi ed TiO 2 nano-crystal photoelectrodes developed by spraying ethanol solution mixed with ZnCl 2 solution.…”

“…These surface-modi ed photoelectrode materials exhibit the enhancement of photo-activityprocess by the degradation of phenolic compounds exspecially in visible region [9]. In the previous reports [10,20] the use of ZnO or MgO coating on TiO 2 surface was found to reduce the recombination process. Growth techniques for example the doctor blade procedure [11], protect printout technique [12], anodization method [13] sol-gel approach [20] have became utilized in favour of the development of TiO 2 thin lms for application in DSCs.…”

“…An interesting method of suppressing charge combination corresponds for covering that TiO 2 photograph through broad energy gap metal oxide compounds such as Al 2 O 3, ZnO, MgO, SnO 2 , and Nb 2 O 5 . [19][20][21]. The TiO 2 nanoparticles are used widely to enhance the dye uptake that provides exterior states with that nanoparticles of TiO 2 .…”

Facile Fabrication of SnO2 Nanorod Arrays Films as Electron Transporting Layer for Perovskite Solar Cells

“…As reported, one dimensional (1D) nanostructures could offer a straightforward pathway for electron transport, a wide space for effective pore filling of perovskites or hole transport materials, and a large surface area for carrier extraction, thus improving the photovoltaic performance of PSCs . Up to now, different kinds of 1D TiO 2 structures, such as nanorods, nanocone, nanowires, and nanotubes, have been used in PSCs. So far, there are few reports about 1D SnO 2 nanostructured ETMs for PSCs, and neither of them have so satisfactory PCE.…”

Localized incorporation of cesium ions to improve formamidinium lead iodide layers in perovskite solar cells

“…Interfacial diffusion is another widely used method for incorporating dopants, and its doping prole is mainly localized in the vicinity of doping interfaces. [23][24][25] This localized doping method can be adopted for preparing Cs + doped FAPbI 3 layers, which are composed of a Cs + doped underlayer and an undoped capping layer. The undoped part of the perovskite layers tends to preserve the original bandgap of FAPbI 3 , which prevents the blue shi of light absorption by Cs + ion incorporation.…”