The complete in-gap electronic structure of colloidal quantum dot solids and its correlation with electronic transport and photovoltaic performance

Khabiboulakh Katsiev, Alex Ip, Armin H. Fischer, Iori Tanabe, Xin Zhang, Ahmad R. Kirmani, Oleksandr Voznyy, Lisa R. Rollny, Kang Wei Chou, Susanna Thon, Graham H. Carey, Xiaoyu Cui, Aram Amassian, Peter A. Dowben, E. H. Sargent, Osman Bakr

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

The direct observation of the complete electronic band structure of a family of PbS CQD solids via photoelectron spectroscopy is reported. We investigate how materials processing strategies, such as the latest passivation methods that produce record-performance photovoltaics, achieve their performance advances. Halide passivated films show a drastic reduction in states in the midgap, contributing to a marked improvement in the device performance. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)937-942
Number of pages6
JournalAdvanced Materials
Volume26
Issue number6
DOIs
StatePublished - Nov 15 2013

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Mechanical Engineering

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