Chemical Vapor Deposited Thin Palladium Sulfide Crystals for Highly Photoresponsive Photodetector
Abstract Nonlayered palladium sulfide (PdS) is of interest due to its rich physical properties and promising applications in optoelectronic devices. However, the growth of thin nonlayered PdS remains challenging because of its intrinsic 3D lattice structure. Here, the first demonstration of the direct synthesis of thin rectangular PdS ribbons/flakes on SiO 2 /Si substrates by a facile chemical vapor deposition (CVD) approach is presented. The atomic structure and high crystalline quality of CVD‐derived PdS crystals are shown by scanning transmission electron microscopy. The nonlinear saturable absorption and absorption enhancement are revealed by using ultrafast optical pump‐probe spectroscopy, and the photocarrier dynamics present the hot phonon bottleneck and Auger recombination effects. Additionally, the Raman vibration modes display the polarization‐dependent properties verified by angle‐resolved polarized Raman spectroscopy. Importantly, the photodetector based on PdS ribbon demonstrates a decent photoresponsivity of ≈7.7 × 10 3 A W −1 . These results provide an effective way to form thin nonlayered PdS with potential applications in the field of photodetection.
Authors
- Fuhai Su (ORCID: https://orcid.org/0000-0002-4542-1277)
- Shaolong Jiang (ORCID: https://orcid.org/0000-0001-8708-0776)
- Fuchen Hou
- Guang Yang (ORCID: https://orcid.org/0000-0002-5889-3978)
- Yilin Sun (ORCID: https://orcid.org/0000-0001-9390-4030)
- Erding Zhao
- Yu‐Qing Zhao (ORCID: https://orcid.org/0000-0001-8073-5346)
- Qishuo Yang (ORCID: https://orcid.org/0000-0003-0418-1227)
- Bojian Zhou (ORCID: https://orcid.org/0000-0002-9637-9750)
- Jin Yang (ORCID: https://orcid.org/0000-0002-1026-8495)
- Jia‐Geng Liu (ORCID: https://orcid.org/0000-0002-8170-7264)
- Qian Liu
- Yu‐Fei Lang
- Xi Zhang (ORCID: https://orcid.org/0009-0007-1790-5884)
Institutions
- Hunan University of Science and Technology (CN)
- Beijing Institute of Technology (CN)
- North China University of Science and Technology (CN)
- Northwestern Polytechnical University (CN)
- Chinese Academy of Sciences (CN)
- Southern University of Science and Technology (CN)
- Institute of Solid State Physics (CN)
- Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (CN)
- Guilin University of Electronic Technology (CN)
- Beihang University (CN)
Publication Details
- Journal
- Advanced Optical Materials
- Published
- 2024-09-30
- DOI
- https://doi.org/10.1002/adom.202401624
- Primary Topic
- Advanced Semiconductor Detectors and Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Guilin University of Electronic Technology
- Development and Reform Commission of Shenzhen Municipality
- Southern University of Science and Technology