Role of phase composition for electronic states in CH{sub 3}NH{sub 3}PbI{sub 3} prepared from CH{sub 3}NH{sub 3}I/PbCl{sub 2} solution

Naikaew, Atittaya; Prajongtat, Pongthep; Lux-Steiner, Martha Ch.; Dittrich, Thomas; Arunchaiya, Marisa

doi:10.1063/1.4922554

Title: Role of phase composition for electronic states in CH{sub 3}NH{sub 3}PbI{sub 3} prepared from CH{sub 3}NH{sub 3}I/PbCl{sub 2} solution

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Abstract

Modulated surface photovoltage (SPV) spectra have been correlated with the phase composition in layers of CH{sub 3}NH{sub 3}PbI{sub 3} (MAPbI{sub 3}) prepared from MAI and PbCl{sub 2} and annealed at 100 °C. Depending on the annealing time, different compositions of MAPbI{sub 3}, MAPbCl{sub 3}, MACl, PbI{sub 2}, and an un-identified phase were found. It has been demonstrated that evaporation of MAI and HI is crucial for the development of electronic states in MAPbI{sub 3} and that only the appearance and evolution of the phase PbI{sub 2} has an influence on electronic states in MAPbI{sub 3}. With ongoing annealing, (i) a transition from p- to n-type doping was observed with the appearance of PbI{sub 2}, (ii) shallow acceptor states were distinguished and disappeared in n-type doped MAPbI{sub 3}, and (iii) a minimum of the SPV response related to deep defect states was found at the transition from p- to n-type doping. The results are discussed with respect to the further development of highly efficient and stable MAPbI{sub 3} absorbers for solar cells.

Authors:

Naikaew, Atittaya; Prajongtat, Pongthep ^[1]; Lux-Steiner, Martha Ch.; Dittrich, Thomas ^[1]; Arunchaiya, Marisa ^[2]

Helmholtz-Center Berlin for Energy and Materials, Institute of Heterogeneous Materials, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany)
Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900 (Thailand)

Publication Date:: Mon Jun 08 00:00:00 EDT 2015

OSTI Identifier:: 22423751

Resource Type:: Journal Article

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 106; Journal Issue: 23; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMMONIUM COMPOUNDS; ANNEALING; DOPED MATERIALS; ELECTRONIC STRUCTURE; LAYERS; LEAD CHLORIDES; LEAD IODIDES; MATHEMATICAL SOLUTIONS; PEROVSKITES; SOLAR CELLS

Citation Formats


                    Naikaew, Atittaya, Prajongtat, Pongthep, Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Lux-Steiner, Martha Ch., Dittrich, Thomas, and Arunchaiya, Marisa. Role of phase composition for electronic states in CH{sub 3}NH{sub 3}PbI{sub 3} prepared from CH{sub 3}NH{sub 3}I/PbCl{sub 2} solution.  United States: N. p., 2015. 
        Web.  doi:10.1063/1.4922554.

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                    Naikaew, Atittaya, Prajongtat, Pongthep, Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Lux-Steiner, Martha Ch., Dittrich, Thomas, & Arunchaiya, Marisa. Role of phase composition for electronic states in CH{sub 3}NH{sub 3}PbI{sub 3} prepared from CH{sub 3}NH{sub 3}I/PbCl{sub 2} solution.  United States.  https://doi.org/10.1063/1.4922554

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                    Naikaew, Atittaya, Prajongtat, Pongthep, Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Lux-Steiner, Martha Ch., Dittrich, Thomas, and Arunchaiya, Marisa. 2015.  
        "Role of phase composition for electronic states in CH{sub 3}NH{sub 3}PbI{sub 3} prepared from CH{sub 3}NH{sub 3}I/PbCl{sub 2} solution".  United States.  https://doi.org/10.1063/1.4922554.

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@article{osti_22423751,

  title        = {Role of phase composition for electronic states in CH{sub 3}NH{sub 3}PbI{sub 3} prepared from CH{sub 3}NH{sub 3}I/PbCl{sub 2} solution},

  author       = {Naikaew, Atittaya and Prajongtat, Pongthep and Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900 and Lux-Steiner, Martha Ch. and Dittrich, Thomas and Arunchaiya, Marisa},

  abstractNote = {Modulated surface photovoltage (SPV) spectra have been correlated with the phase composition in layers of CH{sub 3}NH{sub 3}PbI{sub 3} (MAPbI{sub 3}) prepared from MAI and PbCl{sub 2} and annealed at 100 °C. Depending on the annealing time, different compositions of MAPbI{sub 3}, MAPbCl{sub 3}, MACl, PbI{sub 2}, and an un-identified phase were found. It has been demonstrated that evaporation of MAI and HI is crucial for the development of electronic states in MAPbI{sub 3} and that only the appearance and evolution of the phase PbI{sub 2} has an influence on electronic states in MAPbI{sub 3}. With ongoing annealing, (i) a transition from p- to n-type doping was observed with the appearance of PbI{sub 2}, (ii) shallow acceptor states were distinguished and disappeared in n-type doped MAPbI{sub 3}, and (iii) a minimum of the SPV response related to deep defect states was found at the transition from p- to n-type doping. The results are discussed with respect to the further development of highly efficient and stable MAPbI{sub 3} absorbers for solar cells.},

  doi          = {10.1063/1.4922554},

  url          = {https://www.osti.gov/biblio/22423751},
  journal      = {Applied Physics Letters},

  issn         = {0003-6951},

  number       = 23,

  volume       = 106,

  place        = {United States},

  year         = {Mon Jun 08 00:00:00 EDT 2015},

  month        = {Mon Jun 08 00:00:00 EDT 2015}

}

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