Dr. Mohammad Ryyan Khan

Associate Professor
Department of Electrical and Electronic Engineering

Faculty

Faculty of Sciences and Engineering

Address

A/2, Jahurul Islam Avenue
Jahurul Islam City, Aftabnagar
Dhaka-1212, Bangladesh

Office

Ext: 294 || Room No# 554
ryyan@ewubd.edu

Academic Background

Ph.D. in Electrical & Computer Engineering (Purdue University , USA )
B.Sc. (Engg) in Electrical and Electronic Engineering (Bangladesh University of Engineering and Technology)

Short Biography

Research webpage: [Khan SLR Group]

Resume: [Link]

Research Interest

Research webpage: [Khan SLR Group]

Solar cells, solar farm, bifacial PV, agro-PV,
Paper bsed biosensors, non-invasive biosensors

Selected Publications

M. T. Patel, R. Asadpour, J. Bin Jahangir, M. Ryyan Khan, and M. A. Alam, “Current-matching erases the anticipated performance gain of next-generation two-terminal Perovskite-Si tandem solar farms,” Applied Energy, vol. 329, p. 120175, Jan. 2023, doi: 10.1016/j.apenergy.2022.120175.
M. Sojib Ahmed, M. Rezwan Khan, A. Haque, and M. Ryyan Khan, “Agrivoltaics analysis in a techno-economic framework: Understanding why agrivoltaics on rice will always be profitable,” Applied Energy, vol. 323, p. 119560, Oct. 2022, doi: 10.1016/j.apenergy.2022.119560.
J. B. Jahangir, Md. Al-Mahmud, Md. S. S. Shakir, A. Haque, M. A. Alam, and M. R. Khan, “A Critical Analysis of Bifacial Solar Farm Configurations: Theory and Experiments,” IEEE Access, vol. 10, pp. 47726–47740, 2022, doi: 10.1109/ACCESS.2022.3170044.
E. Maria, A. Saha, M. R. Khan, Md. A. Zubair, Md. Z. Baten, and R. N. Sajjad, “Carrier transport and performance limit of semi-transparent photovoltaics: CuIn1−xGaxSe2 as a case study,” Journal of Applied Physics, vol. 130, no. 17, p. 173106, Nov. 2021, doi: 10.1063/5.0063930.
M. R. Khan, M. T. Patel, R. Asadpour, H. Imran, N. Z. Butt, and M. A. Alam, “A review of next generation bifacial solar farms: predictive modeling of energy yield, economics, and reliability,” J. Phys. D: Appl. Phys., vol. 54, no. 32, p. 323001, May 2021, doi: 10.1088/1361-6463/abfce5.
M. T. Patel, M. S. Ahmed, H. Imran, N. Z. Butt, M. R. Khan, and M. A. Alam, “Global analysis of next-generation utility-scale PV: Tracking bifacial solar farms,” Applied Energy, vol. 290, p. 116478, May 2021, doi: 10.1016/j.apenergy.2021.116478. (Impact factor: 8.848)
Md. M. H. Mithhu, T. A. Rima, and M. R. Khan, “Global analysis of optimal cleaning cycle and profit of soiling affected solar panels,” Applied Energy, vol. 285, p. 116436, Mar. 2021, doi: 10.1016/j.apenergy.2021.116436. (Impact factor: 8.848)
M. T. Patel, R. A. Vijayan, R. Asadpour, M. Varadharajaperumal, M. R. Khan, and M. A. Alam, “Temperature-dependent energy gain of bifacial PV farms: A global perspective,” Applied Energy, vol. 276, p. 115405, Oct. 2020, doi: 10.1016/j.apenergy.2020.115405. (Impact factor: 8.848)
M. A. Alam and M. R. Khan, “Shockley–Queisser triangle predicts the thermodynamic efficiency limits of arbitrarily complex multijunction bifacial solar cells,” PNAS, Nov. 2019. (Impact factor: 9.412)
M.T. Patel, M. R. Khan, X. Sun, M.A. Alam, A worldwide cost-based design and optimization of tilted bifacial solar farms, Applied Energy. 247 (2019) 467–479. doi:10.1016/j.apenergy.2019.03.150. (Impact factor: 8.848)
M. R. Khan, E. Sakr, X. Sun, P. Bermel, M.A. Alam, Ground sculpting to enhance energy yield of vertical bifacial solar farms, Applied Energy. 241 (2019) 592–598. doi:10.1016/j.apenergy.2019.01.168. (Impact factor: 8.848)
M.T. Patel, M. R. Khan, M.A. Alam, Thermodynamic Limit of Solar to Fuel Conversion for Generalized Photovoltaic-Electrochemical Systems, IEEE Journal of Photovoltaics. 8 (2018) 1082–1089. doi:10.1109/JPHOTOV.2018.2831446.
X. Sun, M. R. Khan, C. Deline, M.A. Alam, Optimization and performance of bifacial solar modules: A global perspective, Applied Energy. 212 (2018) 1601–1610. doi:10.1016/j.apenergy.2017.12.041.
M. R. Khan, A. Hanna, X. Sun, M.A. Alam, Vertical bifacial solar farms: Physics, design, and global optimization, Applied Energy. 206 (2017) 240–248. doi:10.1016/j.apenergy.2017.08.042.
X. Sun, T.J. Silverman, Z. Zhou, M. R. Khan, P. Bermel, M.A. Alam, Optics-Based Approach to Thermal Management of Photovoltaics: Selective-Spectral and Radiative Cooling, IEEE Journal of Photovoltaics. 7 (2017) 566–574. doi:10.1109/JPHOTOV.2016.2646062.
E. Gençer, C. Miskin, X. Sun, M. R. Khan, P. Bermel, M.A. Alam, R. Agrawal, Directing solar photons to sustainably meet food, energy, and water needs, Scientific Reports. 7 (2017) 3133. doi:10.1038/s41598-017-03437-x.
M.A. Alam, M. R. Khan, Thermodynamic efficiency limits of classical and bifacial multi-junction tandem solar cells: An analytical approach, Applied Physics Letters. 109 (2016) 173504. doi:10.1063/1.4966137.
M. R. Khan, X. Wang, M.A. Alam, Nonideal Effects Limit the Efficiency Gain for Angle-Restricted Solar Cells, IEEE Journal of Photovoltaics. PP (2015) 1–7. doi:10.1109/JPHOTOV.2015.2480227.
M. R. Khan, M.A. Alam, Thermodynamic limit of bifacial double-junction tandem solar cells, Applied Physics Letters. 107 (2015) 223502. doi:10.1063/1.4936341.
B. Ray, A.G. Baradwaj, M. R. Khan, B.W. Boudouris, M.A. Alam, Collection-limited theory interprets the extraordinary response of single semiconductor organic solar cells, PNAS. (2015) 201506699. doi:10.1073/pnas.1506699112.
R. Asadpour, R.V.K. Chavali, M. R. Khan, M.A. Alam, Bifacial Si heterojunction-perovskite organic-inorganic tandem to produce highly efficient (ηT* ~33%) solar cell, Applied Physics Letters. 106 (2015) 243902. doi:10.1063/1.4922375.
S.R. Das, C. Akatay, A. Mohammad, M. R. Khan, K. Maeda, R.S. Deacon, K. Ishibashi, Y.P. Chen, T.D. Sands, M.A. Alam, D.B. Janes, Electrodeposition of InSb branched nanowires: Controlled growth with structurally tailored properties, Journal of Applied Physics. 116 (2014) 083506. doi:10.1063/1.4893704.
M. R. Khan, X. Wang, P. Bermel, M.A. Alam, Enhanced light trapping in solar cells with a meta-mirror following generalized Snell’s law, Opt. Express. 22 (2014) A973–A985. doi:10.1364/OE.22.00A973.
X. Wang, M. R. Khan, M. Lundstrom, P. Bermel, Performance-limiting factors for GaAs-based single nanowire photovoltaics, Opt. Express. 22 (2014) A344–A358. doi:10.1364/OE.22.00A344.
M. R. Khan, B. Ray, M.A. Alam, Prospects of layer-split tandem cells for high-efficiency OPV, Solar Energy Materials and Solar Cells. 120, Part B (2014) 716–723. doi:10.1016/j.solmat.2013.08.008.
R. Chen, S.R. Das, C. Jeong, M. R. Khan, D.B. Janes, M.A. Alam, Co-Percolating Graphene-Wrapped Silver Nanowire Network for High Performance, Highly Stable, Transparent Conducting Electrodes, Adv. Funct. Mater. 23 (2013) 5150–5158. doi:10.1002/adfm.201300124.
M.A. Alam, M. R. Khan, Fundamentals of PV efficiency interpreted by a two-level model, American Journal of Physics. 81 (2013) 655–662. doi:10.1119/1.4812594.
X. Wang, M. R. Khan, J.L. Gray, M.A. Alam, M.S. Lundstrom, Design of GaAs Solar Cells Operating Close to the Shockley-Queisser Limit, IEEE Journal of Photovoltaics. 3 (2013) 737–744. doi:10.1109/JPHOTOV.2013.2241594.
M.A. Alam, B. Ray, M. R. Khan, S. Dongaonkar, The essence and efficiency limits of bulk-heterostructure organic solar cells: A polymer-to-panel perspective, Journal of Materials Research. 28 (2013) 541–557. doi:10.1557/jmr.2012.425.
B. Ray, M. R. Khan, C. Black, M.A. Alam, Nanostructured Electrodes for Organic Solar Cells: Analysis and Design Fundamentals, IEEE Journal of Photovoltaics. PP (2012) 1–12. doi:10.1109/JPHOTOV.2012.2220529.
A. Mohammad, S.R. Das, M. R. Khan, M.A. Alam, D.B. Janes, Wavelength-Dependent Absorption in Structurally Tailored Randomly Branched Vertical Arrays of InSb Nanowires, Nano Lett. (2012). doi:10.1021/nl302803e.
M. R. Khan, M.K. Hasan, A novel model for show-through in scan of duplex printed documents, SIViP. 6 (2012) 625–645. doi:10.1007/s11760-010-0192-6.
J.E. Allen, B. Ray, M. R. Khan, K.G. Yager, M.A. Alam, C.T. Black, Self-assembly of single dielectric nanoparticle layers and integration in polymer-based solar cells, Applied Physics Letters. 101 (2012) 063105-063105–4. doi:doi:10.1063/1.4744928.
C. Jeong, P. Nair, M. Khan, M. Lundstrom, M.A. Alam, Prospects for Nanowire-Doped Polycrystalline Graphene Films for Ultratransparent, Highly Conductive Electrodes, Nano Lett. 11 (2011) 5020–5025. doi:10.1021/nl203041n.
M. R. Khan, H. Imtiaz, M.K. Hasan, Show-through correction in scanned images using joint histogram, SIViP. 4 (2010) 337–351. doi:10.1007/s11760-009-0124-5.

G. R. Rimon, M. S. Ahmed, and M. R. Khan, “Albedo and Temperature Aware Analysis of Bifacial vs Monofacial Floating Photovoltaics in Bangladesh,” in 2022 12th International Conference on Electrical and Computer Engineering (ICECE), Dec. 2022, pp. 13–15. doi: 10.1109/ICECE57408.2022.10088821.
Md. M. H. Shihab, M. D. Islam, M. R. Khan, and R. N. Sajjad, “A cross-country techno-economic assessment of soiling-affected solar farms in Bangladesh,” in 2022 12th International Conference on Electrical and Computer Engineering (ICECE), Dec. 2022, pp. 9–12. doi: 10.1109/ICECE57408.2022.10088503.
M. Didarul Islam, M. Aminul Islam, Redwan N. Sajjad, and M. Ryyan Khan, “A Techno-Economic Analysis of Bifacial Panels Under Soiling in South-Asian Urban Area,” in 2022 IEEE Region 10 Symposium (TENSYMP), Jul. 2022, pp. 1–5. doi: 10.1109/TENSYMP54529.2022.9864510.
M. S. Ahmed, M. R. Khan, A. Haque, M. A. Alam, and M. R. Khan, “Interposed versus Juxtaposed Solar Array Configurations for Agrivoltaics,” in 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC), Jun. 2022, pp. 1182–1184. doi: 10.1109/PVSC48317.2022.9938548.
M. D. Islam, M. A. Islam, and M. R. Khan, “Design of I-V Scanner to Analyze the Effects of Partial Shading due to Soiling and Bird-dropping on PV Panels,” in 2021 5th International Conference on Electrical Engineering and Information Communication Technology (ICEEICT), Nov. 2021, pp. 1–6. doi: 10.1109/ICEEICT53905.2021.9667805.
J. B. Jahangir, Md. Al-Mahmud, Md. S. S. Shakir, S. Rahman, A. Haque and M. R. Khan, “Time Division Multiplexed Data Analysis Technique using Auto-Morphing Experimental Studies of PV Systems to Minimize Variability,” in IEEE Region 10 Symposium (TENSYMP) 2020.
Muhammed Tahir Patel, Hassan Imran, Md. Sojib Ahmed, Nauman Z. Butt, Muhammad A. Alam, M. Ryyan Khan, “When and Where to Track: A Worldwide Comparison of Single-axis Tracking vs. Fixed Tilt Bifacial Farms,” in 2020 IEEE 47th Photovoltaic Specialists Conference (PVSC), Jul. 2020.
J. B. Jahangir, Md. Al-Mahmud, Md. S. S. Shakir, Md. M. H. Mithhu, T. A. Rima, R. N. Sajjad, and M. R. Khan, “Prediction of Yield, Soiling Loss, and Cleaning Cycle: A Case Study in South Asian Highly Construction-Active Urban Zone,” in 2020 IEEE 47th Photovoltaic Specialists Conference (PVSC), Jul. 2020.
M. Tahir Patel, M. Ryyan Khan, Jim J. John, and Muhammad A. Alam, "Implications of Seasonal and Spatial Albedo Variation on the Energy Output of Bifacial Solar Farms: A Global Perspective", PVSC 2019.
X. Sun, R. Dubey, S. Chattopadhyay, M. R. Khan, R.V. Chavali, T.J. Silverman, A. Kottantharayil, J. Vasi, M.A. Alam, A novel approach to thermal design of solar modules: Selective-spectral and radiative cooling, in: IEEE, 2016: pp. 3584–3586. doi:10.1109/PVSC.2016.7750340.
M.R. Khan, X. Wang, E. Sakr, M.A. Alam, P. Bermel, Enhanced selective thermal emission with a meta-mirror following Generalized Snell’s Law, in: Symposium L – Optical Metamaterials and Novel Optical Phenomena Based on Nanofabricated Structures, 2015: p. mrsf14–1728–l02–09 (7 pages). doi:10.1557/opl.2015.357.
M.R. Khan, M.. Alam, Critical binding energy for exciton dissociation and its implications for the thermodynamic limit of organic photovoltaics, in: Device Research Conference (DRC), 2014 72nd Annual, 2014: pp. 281–282. doi:10.1109/DRC.2014.6872406.
M.R. Khan, P. Bermel, M.A. Alam, Thermodynamic limits of solar cells with non-ideal optical response, in: Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th, 2013: pp. 1036–1040. doi:10.1109/PVSC.2013.6744318.
X. Wang, M.R. Khan, M.A. Alam, M. Lundstrom, Approaching the Shockley-Queisser limit in GaAs solar cells, in: 2012 38th IEEE Photovoltaic Specialists Conference (PVSC), 2012: pp. 002117–002121. doi:10.1109/PVSC.2012.6318015.
M.A. Alam, B. Ray, M.R. Khan, Untangling the essence of bulk heterostructure organic solar cells: Why complex need not be complicated, in: 2011 International Semiconductor Device Research Symposium (ISDRS), 2011: pp. 1–2. doi:10.1109/ISDRS.2011.6135421.
B. Ray, M.R. Khan, M.A. Alam, Performance Improvement of Polymer Based Solar Cell by Ordered Nano-Morphology, in: 2010 18th Biennial University/Government/Industry Micro/Nano Symposium, 2010: pp. 1–3. doi:10.1109/UGIM.2010.5508895.
M.R. Khan, T. Hasan, M.R. Khan, Iterative noise power subtraction technique for improved speech quality, in: 2008 International Conference on Electrical and Computer Engineering, 2008: pp. 391–394. doi:10.1109/ICECE.2008.4769238.

1. Binglin Zhao, Xingshu Sun, M. Ryyan Khan, and Muhammad A. Alam (2018), "Purdue University Meteorological Tool," https://nanohub.org/resources/pumet. (DOI: 10.4231/D3PR7MW72).
2. Binglin Zhao, Xingshu Sun, M. Ryyan Khan, and Muhammad Ashraful Alam (2018), "Purdue University Bifacial Module Calculator (PUB)," https://nanohub.org/resources/pub. (DOI: 10.4231/D3QV3C60N).
3. M. R. Khan, X. Jin, Muhammad A. Alam (2016), "PVLimits: PV thermodynamic limit calculator," https://nanohub.org/resources/pvlimits. (DOI: 10.4231/D37H1DN7Q).
4. B. Ray, C. A. G. Williamson, M. R. Khan, Muhammad A. Alam (2014), "OPV Lab", https://nanohub.org/resources/opv. (DOI: 10.4231/D3Z31NP7F)

M. Ryyan Khan, "A techno-economic framework predicting economic gains in agrivoltaics configurations on major crops", Fraunhofer ISE Agrivoltaics Lecture Series, Jan 2023.
M. Ryyan Khan, "Techno-economic Prediction of Agrivoltaics: Prospects of Long-Term Sustainable Energy Growth in Bangladesh", Keynote in 6th ICDRET, 2021.
M. Ryyan Khan, "Numerical modeling of solar panel array", IEEE-day workshop, IEEE EWU Student Branch, Oct 2021.
M. Ryyan Khan, "Cleaning solar farms: A balance between energy yield and economics", seminar in International PV Quality Assurance Taskforce (PVQAT), Task Group-12, July 2021.
M. Ryyan Khan, "Soiling on solar farms: When should we clean the panels?", Seminar in University of Dhaka, March 2021
M. R. Khan, and M. A. Alam, “Broad-band meta-surface embedded in dielectrics: challenges, constraints, and designs”, 2016 Micro and Nanoscale Science for Addressing Grand Challenges, Purdue University, West Lafayette, IN. Apr 2016.
A. Mohammad, S. Das, M. R. Khan, M. A. Alam, and D. Janes. “Electrochemically Deposited Branched Indium Antimonide(InSb) Nanowire Arrays as ‘In-Situ’ Anti-Reflective Structures.” Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States. Jun (2011).

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Dr. Mohammad Ryyan Khan

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