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Chen JW, Pal A, Chen BH, Kumar G, Chatterjee S, Peringeth K, Lin ZH, Huang MH. Shape-Tunable BaTiO 3 Crystals Presenting Facet-Dependent Optical and Piezoelectric Properties. Small 2023; 19:e2205920. [PMID: 36521932 DOI: 10.1002/smll.202205920] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/27/2022] [Indexed: 06/17/2023]
Abstract
BaTiO3 octahedra, edge-, and corner-truncated cubes, and cubes with four tunable sizes from 132 to 438 nm are synthesized by a solvothermal growth approach. Acetic acid treatment can cleanly remove BaCO3 impurity. Rietveld refinement of X-ray diffraction patterns and Raman spectra help to confirm the particles have a tetragonal crystal structure. The crystals also exhibit size- and facet-dependent bandgap shifts. BaTiO3 octahedra show larger piezoelectric, ferroelectric, and pyroelectric effects than truncated cubes and cubes. The measured dielectric constant differences should be associated with their various facet-dependent behaviors. Piezoelectric nanogenerators fabricated from BaTiO3 octahedra consistently show the best performance than those containing truncated cubes and cubes. In particular, a nanogenerator with 30 wt.%-incorporated octahedra displays an open-circuit voltage of 23 V and short-circuit current of 324 nA. The device performance is also highly stable. The maximum output power reaches 3.9 µW at 60 MΩ. The fabricated nanogenerator can provide sufficient electricity to power light-emitting diodes. This work further demonstrates that various physical properties of semiconductor crystals show surface dependence.
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Affiliation(s)
- Jing-Wei Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Arnab Pal
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
- International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Bo-Hao Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu, 300092, Taiwan
| | - Gautam Kumar
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Subhodeep Chatterjee
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Kiran Peringeth
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Zong-Hong Lin
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Michael H Huang
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan
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