Bi2O3/Bi2S3异质结材料的制备及其光电探测性能研究

方向明; 张荣科; 孙宇; 武韦羽; 朱建华; 游秀芬; 高世勇

doi:10.37188/CO.2024-0218

Bi₂O₃/Bi₂S₃异质结材料的制备及其光电探测性能研究

doi: 10.37188/CO.2024-0218

cstr: 32171.14.CO.2024-0218

1.
太原学院材料与化学工程系, 太原 030032
2.
哈尔滨工业大学材料科学与工程学院, 哈尔滨 150001

基金项目: 中央高校基本科研业务费专项资金资助项目（No. HIT. DZJJ. 2023002），太原学院校级一般科研项目（No. 23TYYB09），山西省高等学校科技创新项目（No. 2022L590）

详细信息

作者简介:
方向明（1982—），男，山西太原人，硕士，副教授， 2008年于吉林大学获得硕士学位，主要从事光电材料制备与性能方面的研究。E-mail：fangxiangm@126.com

高世勇（1980—），男，山西大同人，博士，副教授，博士生导师，2010年于吉林大学获得博士学位，主要从事半导体材料与器件方面的研究。E-mail：gaoshiyong@hit.edu.cn

中图分类号: TN36
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出版历程
- 网络出版日期: 2025-04-22

Bi₂O₃/Bi₂S₃ heterojunction composite preparation and photodetection performance

1.
Department of Materials and Chemical Engineering, Taiyuan University, Taiyuan 030032, China
2.
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Funds: Supported by Fundamental Research Funds for the Central Universities (No. HIT. DZJJ. 2023002), Research Program of Taiyuan University (No. 23TYYB09), Science and Technology Innovation Project of Shanxi Province Colleges and Universities (No. 2022L590)

More Information

Corresponding author: gaoshiyong@hit.edu.cn

摘要

摘要:
采用热聚法结合室温溶液法制备了Bi₂O₃/Bi₂S₃异质结复合材料，并对其微观形貌、晶体结构和元素组成等进行了表征。结果表明Bi₂O₃/Bi₂S₃异质结复合材料整体呈现为块状形貌且有孔洞存在，表面相对粗糙。基于所制备的Bi₂O₃/Bi₂S₃异质结复合材料，构筑了光电探测器。在无外加偏压条件下，Bi₂O₃/Bi₂S₃探测器暴露在紫外光下的最大光电流（0.32 μA）和响应速度（65.65/80.56 ms）相比Bi₂O₃探测器均得到了明显增强。此外，该器件可将Bi₂O₃的探测波段从紫外拓宽至可见光，并且在可见光波段也具有快速稳定的自驱动探测能力。这主要是由于Bi₂O₃和窄带隙Bi₂S₃半导体成功耦合，形成了II型能带结构的异质结复合材料。值得注意的是，连续开/关蓝光100次的光电探测性能测试结果表明，Bi₂O₃/Bi₂S₃探测器具有良好的循环稳定性。
- Bi₂O₃ /
- Bi₂S₃ /
- 光电探测器 /
- 异质结
Abstract:
The Bi₂O₃/Bi₂S₃ heterojunction composite was prepared by thermal polymerization combined with room temperature solution method, and its micromorphology, crystal structure and elemental composition were characterized. The results demonstrate that the Bi₂O₃/Bi₂S₃ heterojunction composite exhibits a bulk morphology, accompanied by the presence of pores and a relatively rough surface. Based on the Bi₂O₃/Bi₂S₃ heterojunction composite, the photodetector was fabricated and its photodetection performance was measured under zero bias voltage. When exposed to ultraviolet (UV) light, the maximum photocurrent (0.32 μA) and response speed (65.65/80.56 ms) of the Bi₂O₃/Bi₂S₃ photodetector are significantly enhanced compared to those of the Bi₂O₃ photodetector. In addition, the device exhibits a wide photodetection band from the ultraviolet (UV) to the visible (Vis) spectrum, as well as fast and stable self-driven photodetection capability. This is mainly attributed the successful coupling of Bi₂O₃ and Bi₂S₃ with a narrow band gap, resulting in the formation of a heterojunction composite that exhibits a type II band structure. It is noteworthy that the photodetection performance of the device was measured by continuously alternating between blue light on and off for 100 times. This indicates that the Bi₂O₃/Bi₂S₃ photodetector exhibits excellent cycle stability.
- Bi₂O₃ /
- Bi₂S₃ /
- photodetector /
- heterojunction

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图 1 Bi₂O₃纳米块（a, b）和Bi₂O₃/Bi₂S₃异质结材料（c, d）的FESEM图

Figure 1. FESEM images of Bi₂O₃ nanoblocks (a, b) and Bi₂O₃/Bi₂S₃ composite (c, d)

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图 2 Bi₂O₃纳米块（a）和Bi₂O₃/Bi₂S₃复合材料（b）的EDS能谱图

Figure 2. EDS spectra of Bi₂O₃ nanoblocks (a) and Bi₂O₃/Bi₂S₃ composite (b)

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图 3 Bi₂O₃纳米块和Bi₂O₃/Bi₂S₃复合材料的XRD图谱

Figure 3. XRD patterns of Bi₂O₃ nanoblocks and Bi₂O₃/Bi₂S₃ composite

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图 4 Bi₂O₃/Bi₂S₃复合材料的XPS全谱（a），Bi 4f（b）、O 1s（c）和S 2s（d）的XPS精细谱

Figure 4. XPS full spectrum of Bi₂O₃/Bi₂S₃ composite (a). High-resolution XPS spectra of Bi 4f (b), O 1s (c) and S 2s (d)

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图 5 Bi₂O₃纳米块和Bi₂O₃/Bi₂S₃复合材料光电探测器在紫外光照射下的光响应特性（a）。（b）Bi₂O₃/Bi₂S₃复合材料和Bi₂O₃纳米块（c）光电探测器的响应速度

Figure 5. Photoresponse characteristics of Bi₂O₃ nanoblocks and Bi₂O₃/Bi₂S₃ composite photodetectors under UV light illumination (a). (b) Response speed of Bi₂O₃ nanoblocks and Bi₂O₃/Bi₂S₃ composite (c) Response speed of photodetectors

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图 6 Bi₂O₃纳米块和Bi₂O₃/Bi₂S₃复合材料光电探测器在蓝光（a）、绿光（c）和红光（e）照射下的光响应特性。Bi₂O₃/Bi₂S₃复合材料光电探测器在蓝光（b）、绿光（d）和红光（f）照射下的响应速度。

Figure 6. Photoresponse characteristics of Bi₂O₃ nanoblocks and Bi₂O₃/Bi₂S₃ composite photodetectors under blue (a), green (c) and red (e) light illumination. Response speed of the Bi₂O₃/Bi₂S₃ composite photodetector under blue (b), green (d) and red (f) light illumination.

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图 7 Bi₂O₃/Bi₂S₃复合材料光电探测器的长循环稳定性测试（a）、1-5周期（b）和96-100周期（c）的光响应特性。

Figure 7. Long-term cycling stability measurement of Bi₂O₃/Bi₂S₃ composite photodetector (a). Photoresponse characteristics of 1-5 cycles (b) and 96-100 cycles (c)

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图 8 Bi₂O₃/Bi₂S₃复合材料光电探测器的探测机理图。

Figure 8. Detection mechanism diagram of Bi₂O₃/Bi₂S₃ composite photodetector

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