Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode

Zeynep Berktaş

doi:10.54287/gujsa.1893852

Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode

Abstract

A novel heterojunction device was fabricated by incorporating silver nanoparticles doped, polyethyleneimine functionalized nitrogen-doped graphene quantum dots (Ag-GQDs) onto p-type silicon via a simple and eco-friendly synthesis method. Electrical characterization under dark conditions yielded a barrier height of 0.71 eV, a series resistance of 260 Ω, and an ideality factor of 5.61 for the Ag-doped diode, suggesting the presence of interfacial traps or structural irregularities. The rectification ratio (RR) measured at ±5 V was 9.4 × 10³. The results indicate that the proposed nanocomposite is well suited for diode applications, where its interfacial properties and charge transport characteristics play a key role in determining device performance.

Keywords

References

Allen, M. W., Alkaisi, M. M., & Durbin, S. M. (2006). Metal Schottky diodes on Zn-polar and O-polar bulk ZnO. Applied Physics Letters, 89(10), 103520. https://doi.org/10.1063/1.2346137
Berktaş, Z., Orhan, E., Ulusoy, M., Yildiz, M., & Altındal, Ş. (2023). Negative Capacitance Behavior at Low Frequencies of Nitrogen-Doped Polyethylenimine-Functionalized Graphene Quantum Dots-Based Structure. ACS Applied Electronic Materials, 5(3), 1804-1811. https://doi.org/10.1021/acsaelm.3c00011
Berktaş, Z., Yıldız, M., Seven, E., Oz Orhan, E., & Altındal, Ş. (2022). PEI N-doped graphene quantum dots/p-type silicon Schottky diode. FlatChem, 36, 100436. https://doi.org/10.1016/j.flatc.2022.100436
Canlıca, M., Coşkun, M., Altındal, A., & Nyokong, T. (2012). Schottky barrier diode parameters of Ag/MgPc/p-Si structure. Journal of Porphyrins and Phthalocyanines, 16(07n08), 855-860. https://doi.org/10.1142/s1088424612500824
Cheung, S. K., & Cheung, N. W. (1986). Extraction of Schottky diode parameters from forward current‐voltage characteristics. Applied Physics Letters, 49(2), 85-87. https://doi.org/10.1063/1.97359
Çınar, K., Yıldırım, N., Coşkun, C., & Turut, A. (2009). Temperature dependence of current-voltage characteristics in highly doped Ag/p-GaN/In Schottky diodes. Journal of Applied Physics, 106(7). https://doi.org/10.1063/1.3236647
Cui, Y., Liu, L., Shi, M., Wang, Y., Meng, X., Chen, Y., Huang, Q., & Liu, C. (2024). A Review of Advances in Graphene Quantum Dots: From Preparation and Modification Methods to Application. C, 10(1), 7. https://doi.org/10.3390/c10010007
Deng, Y., Tang, L., Feng, C., Zeng, G., Wang, J., Lu, Y., Liu, Y., Yu, J., Chen, S., & Zhou, Y. (2017). Construction of Plasmonic Ag and Nitrogen-Doped Graphene Quantum Dots Codecorated Ultrathin Graphitic Carbon Nitride Nanosheet Composites with Enhanced Photocatalytic Activity: Full-Spectrum Response Ability and Mechanism Insight. ACS Applied Materials & Interfaces, 9(49), 42816-42828. https://doi.org/10.1021/acsami.7b14541

Kalantari, F., Amirmazlaghani, M., & Olyaee, S. (2023). Enhanced UV-sensing properties by utilizing solution-processed GQD in GQDs/Porous Si heterojunction Near-UV photodetector. Materials Science in Semiconductor Processing, 163, 107560. https://doi.org/10.1016/j.mssp.2023.107560
Kalluri, A., Dharmadhikari, B., Debnath, D., Patra, P., & Kumar, C. V. (2023). Advances in Structural Modifications and Properties of Graphene Quantum Dots for Biomedical Applications. ACS Omega, 8(24), 21358-21376. https://doi.org/10.1021/acsomega.2c08183
Khan, S., & Narula, A. K. (2023). Synthesis of photoluminescent N doped and S doped carbon graphene quantum dots with modified optical properties. Journal of Materials Science: Materials in Electronics, 34(28). https://doi.org/10.1007/s10854-023-11363-0
Maity, N., Kuila, A., Das, S., Mandal, D., Shit, A., & Nandi, A. K. (2015). Optoelectronic and photovoltaic properties of graphene quantum dot–polyaniline nanostructures. Journal of Materials Chemistry A, 3(41), 20736-20748. https://doi.org/10.1039/c5ta06576c
Park, S., Jung, I., Lee, S., Zhao, Q., Lee, S., Kim, H., & Park, S. (2025). Au–Ag controllable composition nanoalloying of hexagonal nanoplates: heterogeneous interfacial nanogaps enhance near-field focusing. Nanoscale, 17(21), 13454-13465. https://doi.org/10.1039/d5nr01140j
Ran, C., Wang, M., Gao, W., Yang, Z., Shao, J., Deng, J., & Song, X. (2014). A general route to enhance the fluorescence of graphene quantum dots by Ag nanoparticles. RSC Advances, 4(42), 21772-21776. https://doi.org/10.1039/c4ra03542a
Rhoderick, E. H. (1982). Metal-semiconductor contacts. IEE Proceedings I (Solid-State and Electron Devices), 129(1), 1-14. https://doi.org/10.1049/ip-i-1.1982.0001
Wang, J., Li, Y., Zhang, B.-P., Xie, D.-D., Ge, J., & Liu, H. (2016). Photoluminescence Properties Research on Graphene Quantum Dots/Silver Composites. Journal of Nanoscience and Nanotechnology, 16(4), 3480-3488. https://doi.org/10.1166/jnn.2016.11892
Wu, C., Yuan, Y., He, Q., & Song, R. (2016). Two-step synthesis of Ag@GQD hybrid with enhanced photothermal effect and catalytic performance. Nanotechnology, 27(48), 48LT02. https://doi.org/10.1088/0957-4484/27/48/48lt02
Yu, Y., Mei, L., Shi, Y., Zhang, X., Cheng, K., Cao, F., Zhang, L., Xu, J., Li, X., & Xu, Z. (2020). Ag-Conjugated graphene quantum dots with blue light-enhanced singlet oxygen generation for ternary-mode highly-efficient antimicrobial therapy. Journal of Materials Chemistry B, 8(7), 1371-1382. https://doi.org/10.1039/c9tb02300c

Details

Primary Language

English

Subjects

Nanoelectronics, Nanomaterials

Journal Section

Research Article

Authors

Zeynep Berktaş ^*
0000-0001-8876-271X
Türkiye

Publication Date

June 30, 2026

Submission Date

February 20, 2026

Acceptance Date

May 15, 2026

Published in Issue

Year 2026 Volume: 13 Number: 2

DOI

https://doi.org/10.54287/gujsa.1893852

IZ

https://izlik.org/JA64MY24TC

Cite

RIS / Bibtex

APA

Berktaş, Z. (2026). Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode. Gazi University Journal of Science Part A: Engineering and Innovation, 13(2), 649-658. https://doi.org/10.54287/gujsa.1893852

AMA

1.Berktaş Z. Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode. GU J Sci, Part A. 2026;13(2):649-658. doi:10.54287/gujsa.1893852

Chicago

Berktaş, Zeynep. 2026. “Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots P-Si Diode”. Gazi University Journal of Science Part A: Engineering and Innovation 13 (2): 649-58. https://doi.org/10.54287/gujsa.1893852.

EndNote

Berktaş Z (June 1, 2026) Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode. Gazi University Journal of Science Part A: Engineering and Innovation 13 2 649–658.

IEEE

[1]Z. Berktaş, “Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode”, GU J Sci, Part A, vol. 13, no. 2, pp. 649–658, June 2026, doi: 10.54287/gujsa.1893852.

ISNAD

Berktaş, Zeynep. “Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots P-Si Diode”. Gazi University Journal of Science Part A: Engineering and Innovation 13/2 (June 1, 2026): 649-658. https://doi.org/10.54287/gujsa.1893852.

JAMA

1.Berktaş Z. Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode. GU J Sci, Part A. 2026;13:649–658.

MLA

Berktaş, Zeynep. “Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots P-Si Diode”. Gazi University Journal of Science Part A: Engineering and Innovation, vol. 13, no. 2, June 2026, pp. 649-58, doi:10.54287/gujsa.1893852.

Vancouver

1.Zeynep Berktaş. Electrical Transport Mechanisms in Silver Nanoparticles Doped Graphene Quantum Dots /p-Si Diode. GU J Sci, Part A. 2026 Jun. 1;13(2):649-58. doi:10.54287/gujsa.1893852