The defects of ZnO nanorods passivated by ultra-thin Al2O3 film

Shibin Li, Detao Liu, Peng Zhang, Yafei Wang, Hojjatollah Sarvari, Yaoyu Xuan, Zhi David Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

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 Al2O3 monolayers on ZnO nanorods. By employing Al2O3 monolayers, the power conversion efficiency (PCE) of CH3NH3PbI3 (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.

Original languageEnglish
Title of host publicationDielectrics for Nanosystems 7
Subtitle of host publicationMaterials Science, Processing, Reliability, and Manufacturing
EditorsD. Misra, D. Bauza, Z. Chen, K. B. Sundaram, Y. S. Obeng, T. Chikyow, H. Iwai
Pages275-285
Number of pages11
Edition2
ISBN (Electronic)9781607687122
DOIs
StatePublished - 2016
EventSymposium on Dielectrics for Nanosystems 7: Materials Science, Processing, Reliability, and Manufacturing - 229th ECS Meeting - San Diego, United States
Duration: May 29 2016Jun 2 2016

Publication series

NameECS Transactions
Number2
Volume72
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Dielectrics for Nanosystems 7: Materials Science, Processing, Reliability, and Manufacturing - 229th ECS Meeting
Country/TerritoryUnited States
CitySan Diego
Period5/29/166/2/16

Bibliographical note

Funding Information:
This work was supported by National Natural Science Foundation of China under Grant Nos.61474016 and 61405026, 61371046, 61421002, 6157031208, 61471085, and National Higher-education Institution General Research and Development Fund (ZYGX2014J044), Projects of International Cooperation of Sichuan Province (No.2014HH0041). This work was also partially supported by University of Kentucky.

Publisher Copyright:
©The Electrochemical Society.

ASJC Scopus subject areas

  • Engineering (all)

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