The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index.
Quasi-Two-Dimensional Halide Perovskite Single Crystal Photodetector
Abstract
The robust material stability of the quasi-two-dimensional (quasi-2D) metal halide perovskites has opened the possibility for their usage instead of three-dimensional (3D) perovskites. Further, devices based on large area single crystal membranes have shown increasing promise for photoelectronic applications. However, growing inch-scale quasi-2D perovskite single crystal membranes (quasi-2D PSCMs) has been fundamentally challenging. Here we report a fast synthetic method for synthesizing inch-scale quasi-2D PSCMs, namely (C 4 H 9 NH 3 ) n (CH 3 NH 3 ) n −1 Pb n I 3 n +1 (index n = 1, 2, 3, 4, and ∞), and demonstrate their application in a single-crystal photodetector. A quasi-2D PSCM has been grown at the water–air interface where spontaneous alignment of alkylammonium cations and high chemical potentials enable uniform orientation and fast in-plane growth. Structural, optical, and electrical characterizations have been conducted as a function of quantum well thickness, which is determined by the index n . It is shown that the photodetector based on the quasi-2D PSCM with the smallest quantum well thickness ( n = 1) exhibits a strikingly low dark current of ∼10 –13 A, higher on/off ratio of ∼10 4, and faster response time in comparison to those of photodetectors based on quasi-2D PSCMs with larger quantum well thickness ( n > 1). Our study paves the way toward the merging the gap between single crystal devices and the emerging quasi-2D perovskite materials.
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Cites
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Cited by
Tuning the Luminescence of Layered Halide Perovskites
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Low‐Dimensional Metal Halide Perovskite Photodetectors
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Metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells
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Metadata
- Authors
- Wang, K., Wu, C., Yang, D., Jiang, Y., & Priya, S.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-04-23
- Volume
- 12
- Issue
- 5
- Pages
- 4919-4929
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2801546690
- Cited by
- 369
- References
- 57
- FWCI
- 12.42
- Type
- journal article
- Language
- en
- Open access
- closed
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