Methylammonium lead iodide: phase transition temperature

Phase transition temperature Verified
Origin: experimental
Phase transition #1 - Thickness of 30 nm
Initial crystal system orthorhombic
Final crystal system tetragonal
Initial space group Unknown
Final space group Unknown
Direction Unknown
Phase transition temperature 130.0 K

Hysteresis: NIL

D. Li, G. Wang, H. Cheng, C. Chen, H. Wu, Y. Liu, Y. Huang, and X. Duan, Size-dependent phase transition in methylammonium lead iodide perovskite microplate crystals, Nature Communications 7:11330, 1‑8 (2016). doi: 10.1038/ncomms11330.
Phase transition #2 - Thickness of 90 nm
Initial crystal system orthorhombic
Final crystal system tetragonal
Initial space group Unknown
Final space group Unknown
Direction Unknown
Phase transition temperature 150.0 K

Hysteresis: NIL

D. Li, G. Wang, H. Cheng, C. Chen, H. Wu, Y. Liu, Y. Huang, and X. Duan, Size-dependent phase transition in methylammonium lead iodide perovskite microplate crystals, Nature Communications 7:11330, 1‑8 (2016). doi: 10.1038/ncomms11330.
Phase transition #3 - Thickness of 400 nm; 200 nm thick plate apparent hysterisis of 15K
Initial crystal system orthorhombic
Final crystal system tetragonal
Initial space group Unknown
Final space group Unknown
Direction Unknown
Phase transition temperature 170.0 K

Hysteresis: NIL

D. Li, G. Wang, H. Cheng, C. Chen, H. Wu, Y. Liu, Y. Huang, and X. Duan, Size-dependent phase transition in methylammonium lead iodide perovskite microplate crystals, Nature Communications 7:11330, 1‑8 (2016). doi: 10.1038/ncomms11330.
System description
Dimensionality: 3D
Sample type: film
Related data
This data set is directly linked to other data sets: See all related data

Starting materials: PbI2, Si substrate, etc.

Product: MAPbI3 Thin-film on Si

Description: Prepare PbI2 aqueous solution (0.1 g per 100 ml) at 80 °C and cool to room temperature, which leads to the formation of suspended PbI2 microplates. For the PL measurement samples, dip the Si substrates with 300nm SiO2 (with pre-fabricated markers by photolithography) into the aqueous solution for a few seconds. For the FET samples, define the 5 nm Cr/50nm Au (Pt) electrodes with channel lengths of 8 and 40 mm by photolithography followed by thermal evaporation and lift-off. Grow PbI2 microplates onto the pre-fabricated electrodes by randomly dispersion. Convert the prepared PbI2 microplates into CH3NH3PbI3 by vapour phase intercalation. Refer to source for more details.

Method: Temperature-dependent transport measurement

Description: The thickness of the perovskite microplates was determined by tapping-mode atomic force microscopy (Vecco 5,000 system). TEM images and SAED patterns were acquired in an FEI Titan high-resolution transmission microscopy. Temperature-dependent FET device measurements were carried out in a probe station ((Lakeshore, TTP4) coupled with a precision source/measurement unit (Agilent B2902A). The scanning rate for the transport measurement is 20V/s and the devices were pre-biased at the opposite voltage for 30 s before each measurement. Refer to Page 3; Page 4 figure 2.

Comment: Film thickness ranging from 30 nm to 400 nm.

D. Li, G. Wang, H. Cheng, C. Chen, H. Wu, Y. Liu, Y. Huang, and X. Duan, Size-dependent phase transition in methylammonium lead iodide perovskite microplate crystals, Nature Communications 7:11330, 1‑8 (2016). doi: 10.1038/ncomms11330.

Extraction method: Manual entry
Entry added on: July 2, 2019, 11:20 a.m.
Entry added by: Xiaochen Du Duke University
Last updated on: Aug. 31, 2022, 2:53 p.m.
Last updated by: Rayan C Duke University
Data correctness verified by:
  • Rayan C Duke University

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