| 초록 |
The passivation on quantum dot-sensitized solar cells (QDSCs) have been consistently studied for enhancing charge transfer and interrupting interfacial electron recombination. A silica/alumina monolith (SAM) is often referred to as the passivation of perovskite quantum dots for application in displays, but it has not been performed in energy devices such as the solar cells. Here, we report on the photoelectrochemical properties of a copper-indium-selenide (CISe) QDSCs based on an electrode passivated with SAM. The SAM was synthesized by sol-gel reaction in a di-sec-butoxyaluminoxytriethoxysilane (DBATES) toluene solution at a constant humidity. The electrode passivation by the SAM led to the reduction in the electron recombination at the interface between photoanode and electrolyte. As a result, the photovoltaic conversion efficiency of the QDSCs was enhanced from 7.98% to 9.83% under standard solar illumination (100mW/cm2, AM1.5) by the SAM passivation. |
