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Enhanced Piezoelectricity of MAPbI 3 by the Introduction of MXene and Its Utilization in Boosting High-Performance Photodetectors.
- Source :
-
Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Jun; Vol. 36 (23), pp. e2313288. Date of Electronic Publication: 2024 Apr 02. - Publication Year :
- 2024
-
Abstract
- Recently, perovskite photodetectors (PDs) are risen to prominence due to substantial research interest. Beyond merely tweaking the composition of materials, a cutting-edge advancement lies in leveraging the innate piezoelectric polarization properties of perovskites themselves. Here, the investigation shows utilizing Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript>x</subscript> , a typical MXene, as an intermediate layer for significantly boosting the piezoelectric property of MAPbI <subscript>3</subscript> thin films. This improvement is primarily attributed to the enhanced polarization of the methylammonium (MA <superscript>+</superscript> ) groups within MAPbI <subscript>3</subscript> , induced by the OH groups present in Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript>x</subscript> . A flexible PD based on the MAPbI <subscript>3</subscript> /MXene heterostructure is then fabricated. The new device is sensitive to a wide range of wavelengths, displays greatly enhanced performance owing to the piezo-phototronic coupling. Moreover, the device is endowed with a greatly reduced response time, down to millisecond level, through the pyro-phototronic effect. The characterization shows applying a -1.2% compressive strain on the PD leads to a remarkable 102% increase in the common photocurrent, and a 76% increase in the pyro-phototronic current. The present work reveals how the emerging piezo-phototronic and pyro-phototronic effects can be employed to design high-performance flexible perovskite PDs.<br /> (© 2024 Wiley‐VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-4095
- Volume :
- 36
- Issue :
- 23
- Database :
- MEDLINE
- Journal :
- Advanced materials (Deerfield Beach, Fla.)
- Publication Type :
- Academic Journal
- Accession number :
- 38537247
- Full Text :
- https://doi.org/10.1002/adma.202313288