Photovoltaic and interface characteristics of mono-crystalline silicon solar cells with molybdenum oxide hole-selective layers by ammonium hydroxide reconstructed nanostructure

Abstract

Ammonium hydroxide reconstructed nanostructure (AHRN) is proposed as an attachment enhancer between molybdenum oxide (MoOx) hole-selective layers (HSLs) and silicon interface for screen-printed mono-crystalline silicon solar cell (SMSC) applications. The conversion efficiency (CE) is demonstrated from 20.6% to 21.6% for SMSCs with MoO2 HSL and attachment enhancer. The betterment mechanism is attributed to a suitable nanostructure, resulting in the increase of the fill factor and peeling force. Moreover, the interface trap density (Dit) is hardly degraded by MoO2 formed on the Si surface at a specific AHRN.