Abstract
Abstract A new nanocrystalline sensitizer with the chemical formula (CH 3 CH 2 NH 3 )PbI 3 is synthesized by reacting ethylammonium iodide with lead iodide, and its crystal structure and photovoltaic property are investigated. X-ray diffraction analysis confirms orthorhombic crystal phase with a = 8.7419(2) Å, b = 8.14745(10) Å, and c = 30.3096(6) Å, which can be described as 2 H perovskite structure. Ultraviolet photoelectron spectroscopy and UV-visible spectroscopy determine the valence band position at 5.6 eV versus vacuum and the optical bandgap of ca. 2.2 eV. A spin coating of the CH 3 CH 2 NH 3 I and PbI 2 mixed solution on a TiO 2 film yields ca. 1.8-nm-diameter (CH 3 CH 2 NH 3 )PbI 3 dots on the TiO 2 surface. The (CH 3 CH 2 NH 3 )PbI 3 -sensitized solar cell with iodide-based redox electrolyte demonstrates the conversion efficiency of 2.4% under AM 1.5 G one sun (100 mW/cm 2 ) illumination.
Keywords
Materials scienceOrthorhombic crystal systemIodideNanocrystalline materialX-ray photoelectron spectroscopyBand gapPerovskite (structure)NanochemistryChemical engineeringCrystal structureOptoelectronicsNanotechnologyCrystallographyInorganic chemistryChemistry
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Publication Info
- Year
- 2012
- Type
- article
- Volume
- 7
- Issue
- 1
- Pages
- 353-353
- Citations
- 253
- Access
- Closed
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Cite This
Jeong‐Hyeok Im,
Jaehoon Chung,
Seung‐Joo Kim
et al.
(2012).
Synthesis, structure, and photovoltaic property of a nanocrystalline 2H perovskite-type novel sensitizer (CH3CH2NH3)PbI3.
Nanoscale Research Letters
, 7
(1)
, 353-353.
https://doi.org/10.1186/1556-276x-7-353
Identifiers
- DOI
- 10.1186/1556-276x-7-353