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Yao Z, Xiong Y, Kang H, Xu X, Guo J, Li W, Xu X. Tunable Periodic Nanopillar Array for MAPbI 3 Perovskite Photodetectors with Improved Light Absorption. ACS OMEGA 2024; 9:2606-2614. [PMID: 38250387 PMCID: PMC10795138 DOI: 10.1021/acsomega.3c07390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 01/23/2024]
Abstract
In the field of optoelectronic applications, the vigorous development of organic-inorganic hybrid perovskite materials, such as methylammonium lead triiodide (MAPbI3), has spurred continuous research on methods to enhance the photodetection performance. Periodic nanoarrays can effectively improve the light absorption of perovskite thin films. However, there are still challenges in fabricating tunable periodic patterned and large-area perovskite nanoarrays. In this study, we present a cost-effective and facile approach utilizing nanosphere lithography and dry etching techniques to create a large-area Si nanopillar array, which is employed for patterning MAPbI3 thin films. The scanning electron microscopy (SEM) and X-ray diffraction (XRD) results reveal that the introduction of nanopillar structures did not have a significant adverse effect on the crystallinity of the MAPbI3 thin film. Light absorption tests and optical simulations indicate that the nanopillar array enhances the light intensity within the perovskite films, leading to photodetectors with a responsivity of 11.2 A/W and a detectivity of 7.3 × 1010 Jones at 450 nm in wavelength. Compared with photodetectors without nanostructures, these photodetectors exhibit better visible light absorption. Finally, we demonstrate the application of these photodetector arrays in a prototype image sensor.
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Affiliation(s)
- Zhengtong Yao
- Key
Laboratory of Advanced Civil Engineering Materials of Ministry of
Education, Key Laboratory of D&A for Metal-Functional Materials,
School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
| | - Yuting Xiong
- Key
Laboratory of Advanced Civil Engineering Materials of Ministry of
Education, Key Laboratory of D&A for Metal-Functional Materials,
School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
| | - Hanyue Kang
- Key
Laboratory of Advanced Civil Engineering Materials of Ministry of
Education, Key Laboratory of D&A for Metal-Functional Materials,
School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
| | - Xiuzhen Xu
- Key
Laboratory of Advanced Civil Engineering Materials of Ministry of
Education, Key Laboratory of D&A for Metal-Functional Materials,
School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
| | - Jianhe Guo
- Guangdong
Provincial Key Laboratory of Sensing Technology and Biomedical
Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Wen Li
- Key
Laboratory of Advanced Civil Engineering Materials of Ministry of
Education, Key Laboratory of D&A for Metal-Functional Materials,
School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
| | - Xiaobin Xu
- Key
Laboratory of Advanced Civil Engineering Materials of Ministry of
Education, Key Laboratory of D&A for Metal-Functional Materials,
School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
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