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Ciro J, Ramírez D, Mejía Escobar MA, Montoya JF, Mesa S, Betancur R, Jaramillo F. Self-Functionalization Behind a Solution-Processed NiO x Film Used As Hole Transporting Layer for Efficient Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12348-12354. [PMID: 28350447 DOI: 10.1021/acsami.6b15975] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fabrication of solution-processed perovskite solar cells (PSCs) requires the deposition of high quality films from precursor inks. Frequently, buffer layers of PSCs are formed from dispersions of metal oxide nanoparticles (NPs). Therefore, the development of trustable methods for the preparation of stable colloidal NPs dispersions is crucial. In this work, a novel approach to form very compact semiconducting buffer layers with suitable optoelectronic properties is presented through a self-functionalization process of the nanocrystalline particles by their own amorphous phase and without adding any other inorganic or organic functionalization component or surfactant. Such interconnecting amorphous phase composed by residual nitrate, hydroxide, and sodium ions, proved to be fundamental to reach stable colloidal dispersions and contribute to assemble the separate crystalline nickel oxide NPs in the final film, resulting in a very homogeneous and compact layer. A proposed mechanism behind the great stabilization of the nanoparticles is exposed. At the end, the self-functionalized nickel oxide layer exhibited high optoelectronic properties enabling perovskite p-i-n solar cells as efficient as 16.6% demonstrating the pertinence of the presented strategy to obtain high quality buffer layers processed in solution at room temperature.
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Affiliation(s)
- John Ciro
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
| | - Daniel Ramírez
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
| | - Mario Alejandro Mejía Escobar
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
| | - Juan Felipe Montoya
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
| | - Santiago Mesa
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
| | - Rafael Betancur
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
| | - Franklin Jaramillo
- Centro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA) , Calle 70 52-21, Medellín, Colombia
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Mayerhöfer TG, Popp J. Modelling IR spectra of polycrystalline materials in the large crystallites limit—quantitative determination of orientation. ACTA ACUST UNITED AC 2006. [DOI: 10.1088/1464-4258/8/8/007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sporleder D, Ewing GE. Infrared Spectroscopic Investigation of the Heterogeneous Reaction of HNO3 and NaCl(100). J Phys Chem A 2001. [DOI: 10.1021/jp0034729] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Sporleder
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405
| | - George E. Ewing
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405
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Piro OE, González SR, Aymonino PJ, Castellano EE. Infrared optical properties and vibrational behavior of anisotropic crystals: Orthorhombic Ba. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:3125-3134. [PMID: 9943223 DOI: 10.1103/physrevb.36.3125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Piro OE. Optical properties, reflectance, and transmittance of anisotropic absorbing crystal plates. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:3427-3435. [PMID: 9943260 DOI: 10.1103/physrevb.36.3427] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Nichols H, Frech R. Multiphonon transitions in microcrystalline reflectivity of sodium nitrate. J Chem Phys 1978. [DOI: 10.1063/1.435611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Devlin J, James D, Frech R. Correlation field splitting of vibrational modes in disordered NaNO3(I). Chem Phys Lett 1972. [DOI: 10.1016/0009-2614(72)80017-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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