(recently accepted) Naceur Selmane, Ali Cheknane, Hikmat S. Hilal, Mohammed H.S. Helal, Fakhreddin Khamloul, “ Cost-saving and performance-enhancement of CuInGaSe solar cells by adding CuZnSnSe as a second absorber”, Solar Energy. 

Zyoud, A., Nassar, I.M., Salman, M. et al. “Nano-ZnO film photocatalysts in bench-scale continuous-flow mineralization of olive mill waste contaminants in water”. Int. J. Environ. Sci. Technol. 2021.DOI: 10.1007/s13762-021-03291-5

Hikmat S. Hilal, Ahed Zyoud, Mohammad H.S. Hilal, Heba Bsharat, Heba Nassar, Ali Cheknane,”Charge transfer catalysis at solid/liquid interface in photoelectrochemical processes: Enhancement of polycrystalline film electrode stability and performance”, Solar Energy, 2020, vol. 197, pp. 443-454. DOI: 10.1016/j.solener.2020.01.026.

A. H. Zyoud, D. H. Abdelhadi, M. H. S. Helal, S. H. Zyoud, H. Bsharat, S. M. Abu-Alrob, N. Sabli, N. Qamhieh, A. R. Hajamohideen, and H. S. Hilal, “Enhancement of electrochemically deposited pristine CdTe film electrode photoelectrochemical characteristics by annealing temperature and cooling rate,” Optik, vol. 197, p. 163220, Nov. 2019. DOI :10.1016/J.IJLEO.2019.163220

Hikmat S. Hilal, Ahed Zyoud, Mohammed H.S. Helal, Heba Bsharat, Hamza H. Helal, Cheknane Ali, “Effects of annealing temperature and cooling rate on photo-electrochemical performance of pristine polycrystalline metal-chalcogenide film electrodes”, Solar Energy, vol. 183, 2019. Pp.  704-715, DOI: 10.1016/j.solener.2019.03.028.

Hilal, Hikmat S., Ahed H. Zyoud, Khaled Murtada, Nour Nayef, Mohammed H.S. Helal, Naser Qamhieh and AbdulRaziq HajiMohideed. “Combined electrochemical-chemical bath deposited metal selenide nano-film electrodes with high photo-electrochemical characteristics.” 5th International Conference on Renewable Energy: Generation and Applications (ICREGA) (2018): 140-142.

Ahed Zyoud, Khaled Murtada, Hansang Kwon, Hyun-Jong Choi, Tae Woo Kim, Mohammed H.S. Helal, Maryam Faroun, Heba Bsharat, DaeHoon Park, Hikmat S. Hilal. “Copper selenide film electrodes prepared by combined electrochemical/chemical bath depositions with high photo-electrochemical conversion efficiency and stability”. Solid State Sciences, 2018, DOI: 10.1016/j.solidstatesciences.2017.11.013

Ahed Zyoud, Suhaib Al-Yamani, Heba Bsharat, Mohammed H. Helal, Hansang Kwon, Daehoon Park, Hikmat S. Hilal, “Recycled polycrystalline CdS film electrodes with enhanced photo-electrochemical characteristics,” Materials Science in Semiconductor Processing, vol. 74, 2018, pp. 277-283, DOI: 10.1016/j.mssp.2017.10.045.

M. H. S. Helal, C. Fan, D. Liu and S. Yuan, "Peer-to-Peer Based Parallel Genetic Algorithm," 2017 International Conference on Information, Communication and Engineering (ICICE), Xiamen, 2017, pp. 535-538. doi: 10.1109/ICICE.2017.8478917

M. H. S. Helal, D. Liu and S. Yuan, "Using Google's Compute Engine Service Pricing as a Reference for Comparison Between Master-Slave and Island Model-Based Fully Distributed Genetic Algorithm," 2017 International Conference on Information, Communication and Engineering (ICICE), Xiamen, 2017, pp. 468-471. doi: 10.1109/ICICE.2017.8479229.

A. Zyoud, R. S. AlKerm, R. S. Alkerm, D. H. Abdelhadi, DaeHoon Park, M. H.S. Helal, G. Campet, R. W. Muthaffar, H. Kwon, H. S. Hilal “Enhanced PEC characteristics of pre-annealed CuS film electrodes by metalloporphyrin/polymer matrices”, Solar Energy Materials and Solar Cells. 2015, pp. 144. DOI: 10.1016/j.solmat.2015.09.034

Ahed Zyoud, Nour N. Abdul-Rahman, Guy Campet, DaeHoon Park, Hansang Kwon, Tae Woo Kim, Hyun-Jong Choi, Mohammed H.S. Helal, Hikmat S. Hilal, “Enhanced PEC characteristics for CdSe polycrystalline film electrodes prepared by combined electrochemical/chemical bath depositions,” Journal of Electroanalytical Chemistry, vol. 774, 2016, pp. 7-13, ISSN 1572-6657, DOI: 10.1016/j.jelechem.2016.04.048.

A. Zyoud, R. S. Al-Kerm, R. S. Al-Kerm, W. Mansur, M. H.S. Helal, D. Park, G. Campet, N. Sabli, H. S. Hilal, “High PEC conversion efficiencies from CuSe film electrodes modified with metalloporphyrin/polyethylene matrices”, Electrochimica Acta. 2015, pp. 147 :472-479. DOI: 10.1016/j.electacta.2015.05.125

M. H.S. Helal and K. Z. Zamli, “P2R – A Pairwise Testing Strategy Supporting Execution Resumption” in Proceedings of the International Conference on Computational Science and Information Management (ICOCSIM), Bandung, Indonesia, 2012, pp. 239-250, (Awarded Best Paper Award)