Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162491
Title: Organic ion template-guided solution growth of ultrathin bismuth oxyselenide with tunable electronic properties for optoelectronic applications
Authors: Dang, Le-Yang
Liu, Mingqiang
Wang, Gui-Gen
Zhao, Da-Qiang
Han, Jie-Cai
Zhu, Jia-Qi
Liu, Zheng
Keywords: Engineering::Materials
Issue Date: 2022
Source: Dang, L., Liu, M., Wang, G., Zhao, D., Han, J., Zhu, J. & Liu, Z. (2022). Organic ion template-guided solution growth of ultrathin bismuth oxyselenide with tunable electronic properties for optoelectronic applications. Advanced Functional Materials, 32(31), 2201020-. https://dx.doi.org/10.1002/adfm.202201020
Project: NRF-CRP22-2019- 0007 
Journal: Advanced Functional Materials
Abstract: 2D Bi2O2Se has recently attracted widespread research interest due to its high electron mobility and good air stability with tunable bandgap. However, the direct and controllable growth of large-size, high-quality ultrathin Bi2O2Se with tunable electronic properties remains a great challenge. Here, an organic ion template-guided solution growth method, is developed using water as a solvent to efficiently obtain high-quality 2D Bi2O2Se. Significantly, the thicknesses and morphologies of 2D Bi2OxSe with various oxygen deficiencies; are also achieved. Optical spectroscopic results indicate that oxygen defects can dramatically tune the electronic properties of Bi2O2Se, such as work function, band gap, and energy-band positions. As a result, the optimized Bi2O2Se devices exhibit a high photoresponsivity of 842.91 A W−1, photo-detectivity of 8.18 × 1012 Jones under 532 nm laser, and electron mobility of 334.7 cm2 V−1 s−1. This work proposes a new green solution method to synthesize large-sized, high-quality Bi2O2Se with tunable electronic structures that can be extended for various applications and provides a new possibility of transfer-free large-scale device manufacturing.
URI: https://hdl.handle.net/10356/162491
ISSN: 1616-301X
DOI: 10.1002/adfm.202201020
Rights: © 2022 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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