“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 design, synthesis, and characterization of new semiconductor materials for energy and optoelectronic applications. I was awarded my PhD in Physics and Astronomy (2025) on charge-carrier transport and recombination in electron transport layers for halide perovskite solar cells. Today, I am particularly interested in understanding charge transport mechanisms, the physics of intrinsic and extrinsic defects, and the optical and electrical properties of semiconductor materials, including electron transport materials for perovskite solar cells. My work investigates how approaches such as doping, ion implantation, annealing, and surface engineering can be used to control defects and improve material and device performance. If you are interested in collaborating or pursuing a PhD or MSc in these research areas, please contact me for more information on current opportunities.
Research Interests
Teaching
Undergraduate
Publications
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
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
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
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
Controlling the activity of intrinsic and extrinsic defects in doped SnO₂ by ion implantation and annealing
Yusuf, A. S., M. Markwitz, Z. Chen, M. Ramezani, J. V. Kennedy and H. Fiedler
NZIP 2025 Conference.2025Innovative 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
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
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
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
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
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
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)
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
Ion-Implantation of Perovskite Crystals for Solar Cell Application
Yusuf, A. S.,
New Zealand Hydrogen Symposium (NZHS 2024) hosted by GNS Science.2024Effect 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
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
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
Influence of Electron Transport Layer on the Charge Carriers in Halide Perovskite Solar Cells
Abubakar Sadiq Yusuf, Zhan Chen, Maziar Ramezani, Holger Fiedler
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
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
Progress on Electron Transport Layers for Perovskite Solar Cells
Abubakar Sadiq Yusuf, Abubakar Muhammad Ramalan, Alhaji Ahmad Abubakar, Isah Kimpa Mohammed
A Review of Progress in Electron Transport Layers in Perovskite Solar Cells.
Yusuf, A. S., T. M. Anderson & K. Prasad
A Review of Dye-Sensitized Solar Cells (DSSCs): Present Status and Future Prospects
A. A. Abubakar, K. U. Isah, M. I. Kimpa, S. O. Ibrahim & Yusuf, A. S.,
Bound state solutions of the generalized shifted Hulthén potential
C. O. Edet, P. O. Okoi, A. S. Yusuf, P. O. Ushie & P. O. Amadi
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
Synthesis and Thermal Characterization of NZP Compounds Na1-xLixZr2(PO4)3(x = 0.00-0.75)
A. Umaru & Yusuf, A. S.,
Synthesis and Optical Characterization of Boron-Doped Zinc Oxide Thin Film Using Electrostatic Deposition Method.
R. A. Umaisha, A. M. Ramalan & Yusuf, A. S.,
Evaluation of Physico-Chemical Properties of starches from Disocorea Rotundata species.
A. Umaru, Yusuf, A. S., & Oluwatoyin Odeku
2nd School of Physical Sciences Biennial International Conference FUTMINNA.2019Spectral Determination of Depth to the Basement Rocks under Birnin-Kebbi and Tambuwel/Fokku Area of Sokoto Basin
Yusuf, A. S., & C. O. Edet
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
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
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