(Invited) The Defects of ZnO Nanorods Passivated By Ultra-Thin Al2O3 Film. (26th April 2016)

• Record Type: Journal Article
• Authors: Li, Shibin; Liu, Detao; Zhang, Peng; Wang, Yafei; Sarvari, Hojjatollah; Xuan, Yaoyu; Chen, Zhi David
• Is Part Of: ECS transactions. Volume 72:Number 2(2016)
• Page Start: 275
• Page End: 285
• Publication Date: 2016-04-26
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/07202.0275ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Despite dramatically improved efficiency of inorganic-organic metal hybrid perovskite solar cells (PSCs), electron transport is still a challenging issue. In this paper, we report the use of hydrothermal self-assembling ZnO nanorods as electron transport layer in perovskite solar cells. The efficiency of perovskite solar cells is dramatically enhanced by passivating the interface defects via atomic layer deposition of Al2 O3 monolayers on ZnO nanorods. By employing Al2 O3 monolayers, the power conversion efficiency (PCE) of CH3 NH3 PbI3 (MAPbI3 ) PSCs is typically boosted from ~10.38% to 14.27% on average, with the highest efficiency of 15.35%. We suggest that passivation of defects using atomic layer deposition of monolayers might provide a new pathway for improving all types of PSCs.