I share my work on ion beam technology, advanced materials, and renewable energy, with a focus on developing next-generation semiconductor materials.

Biography

I am a physicist and materials scientist whose research focuses on the application of ion beam technologies and advanced nanomaterials for renewable energy and functional materials development. His work is centered on the fabrication, surface modification, and characterization of semiconductor thin films and nanostructures, with particular emphasis on understanding defect engineering, charge transport, and electron transport layers to improve the performance and stability of perovskite solar cells. His research also explores the application of advanced materials synthesis and characterization techniques to develop innovative materials for sustainable energy conversion and optoelectronic technologies.

Research Interests

Semiconductor defect and charge carrier physics
Perovskite solar cells
Ion beam and thin film engineering
Energy materials for photovoltaics and optoelectronics
Electron transport layers (ETLs)

Teaching

Undergraduate

PHYS414Condensed Matter Physics B
PHYS222Electrons and Photons
PHYS245Methods and Experimental Physics
PHYS241Quantum Mechanics & Kinetic Theory
PHY415Optics
PHY 322Solid State Physics 1

Publications

24 total
  1. Mechanism behind enhanced electrical performance of doped nanostructured tin oxide - surface defect engineering vs dopant electron donation.

    Abubakar Sadiq Yusuf, Martin Markwitz, Zhan Chen, Maziar Ramezani, John V. Kennedy, Holger Fiedler

    Next Materials, 2026. 12: p. 102284
    2026
    DOI
  2. Effects of deposition parameters on optical and electrical properties of colloidal SnO₂ film

    Abubakar Sadiq Yusuf, Sharifat Olalonpe Ibrahim, Isah Kimpa Mohammed, Umaru Ahmadu & Kasim Uthman Isah

    Discov Electron 3, 54 (2026)
    2026
    DOI
  3. Innovative trend analysis of precipitation changes over Nigeria: A case study of locations across the Niger and Benue Rivers

    Emmanuel P Agbo, Golden C Offorson, Abubakar S Yusuf, John O Bassey, Moses A Okono, Ugochukwu Nkajoe, Patrick O Ushie

    Journal of the Nigerian Society of Physical Sciences
    2025
    DOI
  4. Review of progress in inorganic electron transport layers for perovskite solar cell applications

    Abubakar Sadiq Yusuf, Martin Markwitz, Zhan Chen, Maziar Ramezani, John V. Kennedy & Holger Fiedler

    Appl. Phys. A 131, 859 (2025)
    2025
    DOI
  5. An overview of solid electrolytes for lithium-ion batteries based on NASICON materials

    Mohammed Isah Kimpa, Abubakar Sadiq Yusuf, Akoba Rashidah, Sanda Abubakar Sadiq, Jibrin Alhaji Yabagi, Muhammad Bello Ladan, Abubakar Shehu Kollere, Ahmed Alhaji Abubakar, Haruna Isah, Fati Abdullahi, Muhammad Muhammad Ndamisto, Kasim Uthman Isah

    Journal of Chemistry and Allied Sciences
    2025
    DOI
  6. Exploring the Impact of Surface Treatments on Electron Transport and Recombination in DSSC Plasmonic Photoanodes: A Systematic Review

    Ahmad Alhaji Abubakar, Yusuf Sadiq Abubakar, Isah Mohammed Kimpa, Sharifat Ibrahim Olalonpe & Kasim Isah Uthman

    Plasmonics 20, 9633–9657 (2025).
    2025
    DOI
  7. A review of coating tin oxide electron transport layer for optimizing the performance of perovskite solar cells

    Abubakar Sadiq Yusuf, Ahmad Alhaji Abubakar, Isah Kimpa Mohammed, Umaru Ahmadu, Kasim Uthman Isah

    Chemistry of Inorganic Materials Volume 6, August 2025, 100100
    2025
    DOI
  8. Effect of Biosynthesized Silver Nanoparticles on The Optical, Structural, and Morphological Properties of TiO₂ Nanocrystals

    Jamila Tasiu, Muhammad Y Onimisi, Abubakar S Yusuf, Eli Danladi, Nicholas N Tasie

    East European Journal of Physics, (1), 315-321
    2024
    DOI
  9. Synthesis and characterization of PEO/PVDF polymer blend electrolytes doped with LiFePo4 nanofiller and epoxidized natural rubber plasticizer

    Firdausi Adamu Erena, Mohammad Bello Ladan, Babakatcha Ndanusa, Alhassan Aliyu, Salahudeen Adamu Gene, Abubakar Sadiq Yusuf

    Science World Journal
    2024
    DOI
  10. SCAPS-1D Analysis of Non-Toxic Lead-Free MASnI3 Perovskite-Based Solar Cell Using Inorganic Charge Transport Layers

    Amanyi, M. I., Yusuf, A. S., Akpoguma, E., Eghaghe, S. O., Eneye, J., Agaku, R. M., Echebiri, L. C., Echebiri, E. U., Ameh, E. O., Eririogu, C. I., Tasie, N. N., Ozurumba, A. C., & Danladi, E. (2024)

    East European Journal of Physics, (3), 447-455.
    2024
    DOI
  11. Effect of Electron Transport Layers, Interface Defect Density and Working Temperature on Perovskite Solar Cells Using SCAPS 1-D Software

    Abubakar S. Yusuf, A.M. Ramalan, A.A. Abubakar, I.K. Mohammed

    East European Journal of Physics, (1), 332-341.
    2024
    DOI
  12. OPTIMIZATION OF TECHNOLOGICAL PROPERTY OF RICE HUSK ASH (RHA)

    Mohammed Isah Kimpa, Sani Garba Durumin-Iya, Abubakar Sadiq Yusuf, Ahmad Alhaji Abubakar, Muhammad Uzair, Muhammad Nasiru Zakar, Kasim Uthman Isah

    FUDMA Journal of Sciences (FJS)
    2024
    DOI
  13. OPTICAL AND ELECTRICAL STUDIES ON ALUMINUM-DOPED ZINC OXIDE (ZNO: AL) FABRICATED USING AEROSOL-ASSISTED CHEMICAL VAPOR DEPOSITION (AACVD) TECHNIQUE

    MOHAMMED ISAH KIMPA, STANLEY CHUKWUEBUKA UGOCHUKWU, AYEBAGBALIPRE JOY JAMES, AKOBA FARIDAH, ABUBAKAR SADIQ YUSUF, UNO ESSANG UNO

    Journal of Engineering Logic and Modelling Research
    2024
    DOI
  14. SCAPS-1D simulated organometallic halide perovskites: A comparison of performance under Sub-Saharan temperature condition

    Anthony C. Ozurumba, Nnamdi V. Ogueke, Chinyere A. Madu, Eli Danladi, Chisom P. Mbachu, Abubakar S. Yusuf, Philibus M. Gyuk, Ismail Hossain

    Heliyon
    2024
    DOI
  15. Optimizing the resistivity of colloidal SnO₂ thin films by ion implantation and annealing

    Abubakar Sadiq Yusuf, Martin Markwitz, Zhan Chen, Maziar Ramezani, John V. Kennedy, Holger Fiedler

    Surfaces and Interfaces
    2024
    DOI
  16. Influence of Electron Transport Layer on the Charge Carriers in Halide Perovskite Solar Cells

    Abubakar Sadiq Yusuf, Zhan Chen, Maziar Ramezani, Holger Fiedler

    Auckland University of Technology, New Zealand
    2024
    DOI
  17. Effect of Al Dope with ZnO Electron Transport Layer in Perovskite Solar Cells Using SCAPs 1-D Simulation

    Abubakar Sadiq Yusuf, Isah Kimpa Mohammed, AM Ramalan, AA Abubakar, Sharifat Olalonpe Ibrahim, Firdausi Erena Adamu, Umaru Ahmadu, Kasim Uthman Isah

    Nigerian Journal of Physics, 33(2), 22-29.
    2024
    DOI
  18. A Review on Preparation Techniques of Charge Transport Layer for Organic and Inorganic Perovskite Solar Cells.

    Yusuf, A. S., A. M. Ramalan, and A. A. Abubakar

    International Research Journal of Pure and Applied Chemistry
    2023
    DOI
  19. Progress on Electron Transport Layers for Perovskite Solar Cells

    Abubakar Sadiq Yusuf, Abubakar Muhammad Ramalan, Alhaji Ahmad Abubakar, Isah Kimpa Mohammed

    Nigerian Journal of Physics (NJP)
    2023
    DOI
  20. Development of Rice Husk and Saw Dust Briquettes for Use as Fuel

    K.U. Isah A. S Yusuf, A. M Ramalan, I O Adebayo, F.A. Makanjuola, N.F. Akpan

    American Based Research Journal
    2021
    DOI
  21. Bound state solutions of the generalized shifted Hulthén potential

    C. O. Edet, P. O. Okoi, A. S. Yusuf, P. O. Ushie & P. O. Amadi

    Indian J Phys 95, 471–480 (2021)
    2021
    DOI
  22. Optical, Morphological and Electrical Properties of PBS Thin Films Prepared by Chemical Bath Deposition (CBD) Technique at Different Deposition Time

    Abubakar Muhammad Ramalan, Abubakar Sadiq Yusuf, DO Samson, Abdul Dahiru Ardo Buba

    American Based Research Journal Vol-7-Issue-11 Nov-2018 ISSN (2304-7151)
    2018
    DOI
  23. Effect of natural dye co-sensitization on the performance of dye-sensitized solar cells (DSSCs) based on anthocyanin and betalain pigment sensitization

    Kasim Uthman Isah, Abubakar Yusuf Sadik, Bukola J Jolayemi

    European Journal of Applied Sciences 9 (3): 140-146, 2017
    2018
    DOI
  24. Trend analysis of temperature in Gombe state using Mann Kendall trend test

    Alhaji UU, Abubakar Sadiq Yusuf, Collins O Edet, Celestine O Oche, EP Agbo

    Journal of Scientific Research & Reports
    2017
    DOI