Published October 20, 2014 | Version v1
Journal article Metadata-only

Qualifying composition dependent p and n self-doping in CH3NH3PbI3

Creators

  • 1. Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0656 (United States)
  • 2. Hunan Key Laboratory for Super-microstructure and Ultrafast Process, College of Physics and Electronics, Central South University, Changsha 410083 (China)
  • 3. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)

Description

We report the observation of self-doping in perovskite. CH3NH3PbI3 was found to be either n- or p-doped by changing the ratio of methylammonium halide (MAI) and lead iodine (PbI2) which are the two precursors for perovskite formation. MAI-rich and PbI2-rich perovskite films are p and n self-doped, respectively. Thermal annealing can convert the p-type perovskite to n-type by removing MAI. The carrier concentration varied as much as six orders of magnitude. A clear correlation between doping level and device performance was also observed.

Additional details

Identifiers

DOI
10.1063/1.4899051;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
105
Journal Issue
16
Journal Page Range
p. 163508-163508.5
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46057331
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
AMMONIUM COMPOUNDS; ANNEALING; CARRIERS; CONCENTRATION RATIO; CORRELATIONS; DOPED MATERIALS; EQUIPMENT; LEAD IODIDES; N-TYPE CONDUCTORS; PEROVSKITE; PRECURSOR; P-TYPE CONDUCTORS; THIN FILMS
Descriptors DEC
DIMENSIONLESS NUMBERS; FILMS; HALIDES; HALOGEN COMPOUNDS; HEAT TREATMENTS; IODIDES; IODINE COMPOUNDS; LEAD COMPOUNDS; LEAD HALIDES; MATERIALS; MINERALS; OXIDE MINERALS; PEROVSKITES; SEMICONDUCTOR MATERIALS

Optional Information

Notes
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