Nano-Micro Letters, Volume. 16, Issue 1, 192(2024)

Facile Semiconductor p–n Homojunction Nanowires with Strategic p-Type Doping Engineering Combined with Surface Reconstruction for Biosensing Applications

Liuan Li1,†... Shi Fang1,†, Wei Chen1, Yueyue Li2, Mohammad Fazel Vafadar3, Danhao Wang1, Yang Kang1, Xin Liu1, Yuanmin Luo1, Kun Liang1, Yiping Dang4, Lei Zhao4, Songrui Zhao3, Zongzhi Yin2,* and Haiding Sun1,** |Show fewer author(s)
Author Affiliations
  • 1iGaN Laboratory, School of Microelectronics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • 2Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, People’s Republic of China
  • 3Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, QC H3A 0E9, Canada
  • 4Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No 1277 Jiefang Ave., Wuhan 430022, People’s Republic of China
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    Photosensors with versatile functionalities have emerged as a cornerstone for breakthroughs in the future optoelectronic systems across a wide range of applications. In particular, emerging photoelectrochemical (PEC)-type devices have recently attracted extensive interest in liquid-based biosensing applications due to their natural electrolyte-assisted operating characteristics. Herein, a PEC-type photosensor was carefully designed and constructed by employing gallium nitride (GaN) p–n homojunction semiconductor nanowires on silicon, with the p-GaN segment strategically doped and then decorated with cobalt–nickel oxide (CoNiOx). Essentially, the p–n homojunction configuration with facile p-doping engineering improves carrier separation efficiency and facilitates carrier transfer to the nanowire surface, while CoNiOx decoration further boosts PEC reaction activity and carrier dynamics at the nanowire/electrolyte interface. Consequently, the constructed photosensor achieves a high responsivity of 247.8 mA W-1 while simultaneously exhibiting excellent operating stability. Strikingly, based on the remarkable stability and high responsivity of the device, a glucose sensing system was established with a demonstration of glucose level determination in real human serum. This work offers a feasible and universal approach in the pursuit of high-performance bio-related sensing applications via a rational design of PEC devices in the form of nanostructured architecture with strategic doping engineering.

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    Liuan Li, Shi Fang, Wei Chen, Yueyue Li, Mohammad Fazel Vafadar, Danhao Wang, Yang Kang, Xin Liu, Yuanmin Luo, Kun Liang, Yiping Dang, Lei Zhao, Songrui Zhao, Zongzhi Yin, Haiding Sun. Facile Semiconductor p–n Homojunction Nanowires with Strategic p-Type Doping Engineering Combined with Surface Reconstruction for Biosensing Applications[J]. Nano-Micro Letters, 2024, 16(1): 192

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    Paper Information

    Category: Research Articles

    Received: Jan. 31, 2024

    Accepted: Mar. 11, 2024

    Published Online: Jan. 23, 2025

    The Author Email: Yin Zongzhi (yinzongzhi@ahmu.edu.cn), Sun Haiding (haiding@ustc.edu.cn)

    DOI:10.1007/s40820-024-01394-5

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