Self-Cleaning Transparent Pn Junction in Znco2o4/Lacro3 Quantum Dot/Laalo3 Towards Enhanced Photovoltaic Enhancement Via Synergism of Homogeneous Perovskite Qds and Hydrophobic Interface

Abstract

Self-cleaning transparent device in LaCrO3 QDs-surface plasma synergistically modified ZnCo2O4/LaAlO3 pn junction is prepared via sol-gel-hydrothermal-freeze drying-annealing-surface plasma method. ZnCo2O4/ LaCrO3 QDs/LaAlO3 exhibits transmittance ~85%, photovoltaic enhancement ~4.1×103-folds, stable output over 5 months and good self-cleaning via hydrophobicity (contact angle ~121.6 °). It’s mainly attributed to LaCrO3 QDs-SP synergetic modification. Besides appropriate potential and high quantum yield, LaCrO3 QDs can improve kinetic equilibrium for PCE-transparency balance through increased p-type conductivity by the synergism of Cr2+/Cr3+, Co2+/Co3+ mixed state and interstitial oxygen. Moreover, SP modification can enhance solar and carrier efficiency via surface optimization, meanwhile achieving self-cleaning via its hydrophobicity, including providing surface passivation to maintain structural stability for actual application

Keywords: Transparency, Photovoltaic Conversion, Self-cleaning, Surface Plasma