Dayan Ban

Emerging thin film technology



Department of Electrical and Computer Engineering, Waterloo Institute for Nanotechnology University of Waterloo, Waterloo, 200 University Ave. West, Waterloo, Ontario, N2L3G1, Canada






Dayan Ban, Professor (with tenure)

Department of Electrical and Computer Engineering, University of Waterloo

200 University Ave. West, Waterloo, Ontario, Canada, N2L3G1

Email:, Tel: 1-519-888-4567 ext. 37467, Homepage:

Research  Interests:  Photonics,  Optoelectronics,  Quantum  Cascade  Lasers,  Computer  vision  technologies, Artificial Intelligence (AI), Nanotechnology, Nanofabrication, Energy harvesting  


January, 2003  Ph.D. in electrical and computer engineering, University of Toronto, Toronto, Canada Supervisor: Prof. Edward Sargent July, 1995      Master in Physics, University of Science and Technology of China (USTC), Hefei, China

June, 1993     Bachelor in Physics (with University highest honor), USTC, Hefei, China

Professional Appointments

Jan. – Dec. 2022  Associate Director, Nanotechnology Engineering, University of Waterloo, Waterloo, Canada

Jul. 2014 to date   Professor (with Tenure), ECE Department, University of Waterloo (UW), Waterloo, Canada

May 2020 to Apr. 2023    Chair Professor of Henan Province, Henan University, Henan province, China

Mar. to Jun. 2016  Visiting Professor, Department of Electronic Engineering, Tsinghua University, Beijing,

May 2011 to Apr. 2014    Associate Director, Nanotechnology Engineering (NE) UW, Waterloo, Canada

Jul. 2010 to Jun. 2014    Associate Professor (with Tenure), ECE Department, UW, Waterloo, Canada

Jan. to Aug. 2009         Visiting Scientist    Research Lab of Electronics, MIT, Cambridge, MA, USA

Nov. 2005 to Jul. 2010    Assistant Professor (Tenure-track) ECE Department, UW, Waterloo, Canada

Sept. 2002 to Oct. 2005    Assistant research officer, Institute for Microstructural Science (IMS), National Research Council of Canada (NRC), Ottawa, Canada

Selected Research Projects

(1)  Principal Investigator, An Integrated Microfluidic and Photonic Platform for Real-time Biomarker Quantification, Natural Science and Engineering Research Council (NSERC) of Canada, budget: $693,000.00, May 15, 2022 to May 14th, 2025.

(2)  Principal Investigator, A remote, high-throughput temperature monitoring system for COVID-19 screening, Natural Science and Engineering Research Council (NSERC) of Canada, budget: $50,000.00, May 15, 2020 to Jan. 31s, 2021.

(3)  Principal Investigator, InGaN-based micro-light emitting diode (LED) arrays integrated with a driving circuit backplane, NSERC, budget: $855,360.00,  Aug. 2018-Aug. 2022.

(4)  Principal Investigator, Micrometer-sized photodetectors for selective-area transferring and integration on a heterogeneous substrate, NSERC, budget: $450,000.00, Aug. 2019-Jul. 2023.

(5)  Principal Investigator, High-performance perovskite-based energy harvesting devices, NSERC, budget:$195,000.00, April 2022 – April 2027.

Selected Publications 

(1)  Nicolas R Tanguy, Masud Rana, Asif A Khan, Xiao Zhang, Nicole Tratnik, Heyu Chen, Dayan Ban, Ning Yan, “Natural Lignocellulosic Nanofibrils as Tribonegative Materials for Self-Powered Wireless Electronics,” Nano Energy, vol.98, p. 107337 (2022) (2)  Boyu Wen, Dayan Ban, "High-temperature Terahertz Quantum Cascade Lasers," Progress in Quantum Electronics, vol.78, 100363 (2021).

(3)  Asif Abdullah Khana, Guangguang Huanga, Md. Masud Rana, Nicolas Tanguy, Ning Yan, Chunlei Wang, Shuhong Xu, Dayan Ban , "Superior Transverse Piezoelectricity in Two-Dimensional OrganicInorganic Hybrid Perovskite Nanosheets for Nanogenerators ," Nano Energy, vol. 86, 106039 (2021).

(4)  Guangguang Huang, Asif Abdullah Khan, Md. Masud Rana, Chao Xu, Shuhong Xu, Resul Saritas, Steven Zhang, Eihab-Abdel Rahman, Pascal Turban, Soraya Ababou-Girard, Chunlei Wang, Dayan Ban, "Achieving Ultrahigh Piezoelectricity in Organic-Inorganic Vacancy-Ordered Halide Double Perovskites for Mechanical Energy Harvesting," ACS Energy Letters, vol. 6, 16-23 (2021). (5)  F. Duan, K. Chen, S. Wang, L. Wei, Y. Yu, D. Ban, "Temperature profile and transient response of thermally tunable ridge waveguides with laterally supported suspension," Applied Physics Letter, 116, p. 011102 (2020).

(6)  S. Rassel, C. Xu, S. Zhang, D. Ban, "Noninvasive blood glucose detection using a quantum cascade laser," Analyst 145 (7), pp. 2441-2456 (2020).

(7)  Mingyu Zhang, Dayan Ban, Chao Xu# and John T.W. Yeow, "Large-area, Broadband and Sensitive Photo-thermoelectric Infrared Detection Based on A Carbon Nanotube Black-body Absorber," ACS Nano, 13, pp. 13285-13292 (2019).

(8)  A.  A. Khan, A. Mahmud, Y . Zhang, S. Islam, P . Voss and Dayan Ban, "A self-powered multibroadcasting wireless sensing system realized with an all-in-one triboelectric nanogenerator," Nano Energy, 62, pp. 691-699 (2019).

(9)  R. S. Dhar, L. Li, H. Ye, S, G. Razavipour, X. Wang, R. Q. Yang, D. Ban, "Nanoscopically resolved dynamic charge carrier distribution in operating interband cascade lasers," Laser & Photonics Review, vol. 8, pp. 224-230 (2015).

(10)  Saeed Fathololoumi, Emmanuel Dupont, C. W. I. Chan, Z. R. Wasilewski, S. R. Laframboise, Dayan Ban, A. Matyas, C. Jirauschek, Q. Hu, H. C. Liu, "Terahertz quantum cascade lasers operating up to ~200K with optimized oscillator strength and improved injection tunneling," Optics Express, vol. 20, pp. 3866-3876 (2012).

(11)  Jun Chen, Dayan Ban, Michael G. Helander, Zhenghong Lu and P. Poole, "Near-infrared inorganic/organic optical upconverter with an external efficiency of > 100%", Advanced Materials, vol. 22, pp. 4900-4904, (2010).

Awards, Scholarships & Honors

2022    The John R. Evans Leaders Fund (JELF) award, Canada Foundation Innovation (CFI), Canada.

2019       WIN Research Leader Award 2018-2019, Waterloo Institute for Nanotechnology (WIN), UW, Canada.

2019       Research Excellence Award, ECE Department, University of Waterloo, Canada.

2017       Faculty of Engineering Outstanding Performance Award, University of Waterloo, Canada.

2012       Engineering Research Excellence Award, University of Waterloo, Canada.

2008       Faculty of Engineering Outstanding Performance Award, University of Waterloo, Canada.

2007       Ontario provincial early research award, Ontario, Canada

2007        Canadian Foundation Innovation, Leader’s Opportunity Fund award, Canada

Abstract for Presentation

Photonics and energy applications of perovskite devices


Perovskite  materials have been widely used in photonic applications  because of their facile manufacture and excellent optoelectronic performance, including high optical  absorption  for  solar  cells,  high  color  purity  and  spectral  stability  for  lightemitting  diodes,  large  Stokes  shift  or  small  absorption-emission  overlap  (low reabsorption  loss)  for  luminescent  solar  concentrators,  to  name  a  few.  Recently, perovskites have been adopted for energy harvesting applications because of their large piezoelectric coefficients. In this talk, I will present the latest progress in perovskite research  ranging  from  photonics  to  energy-related  applications  [1-10].  The  research discoveries  include  efficient  solar  cells  based  on  monolayer  perovskite  bridges  that enabled  strong  quantum  dot  coupling;  bright,  narrowband,  and  stable  blue  emitting perovskite diodes  enabled by  chloride insertion-immobilization;  attachable  luminescent solar  concentrators;  and  high-performance  nanogenerators  based  on  perovskite materials. 


[1]  A.  A. Khan, et. al., “Inorganic-organic perovskite/polymernanocomposite enabling highly integrated uniaxial  tristate  hybrid  nanogeneratorfor  sustainable  mechanical  energy  harvesting,”  ACS  Applied Materials & Interfaces, vol. 14, 4119-4131 (2022).

[2] P. Xia, et. al., “Perovskite Luminescent Solar Concentrators for Photovoltaics,” APL Photonics, vol. 6, 120901 (2021).

[3] J. Xu, et. al., "Ultrasonication-Prepared Copper-Doped Cesium Halide Nanocrystals with Bright and Stable Emission," Nanoscale, vol. 13, 9659-9667 (2021).

[4]  X.  Li,  et.  al.,  "Bi  and  Sb  Codoped  Cs2Ag0.1Na0.9InCl6  Double  Perovskite  with  ExcitationWavelength-Dependent Dual-Emission for Anti-Counterfeiting Application,"  ACS Applied Materials & Interfaces, vol. 13, 31031-31037 (2021).

[5]  P.  Xia,  et.  al.,  "In  Situ-Prepared  Attachable  Transparent  Luminescent  Solar  Concentrators  for Photovoltaic with Polymer Antireflection/Barrier Layer," Solar RRL, vol. 5, 2100491 (2021).

[6]  G.  Huang,  et.  al.,  "Maniplation  of  Spin  Splitting  in  Two-Dimensional  Lead  Bromide  Perovskite Rashba Piezoelectrics," ACS Applied Electronic Materials, vol. 3, 285-291 (2021).

[7]  A. A.  Khan  et.  al.,  "Superior  Transverse  Piezoelectricity  in  Two-Dimensional  Organic-Inorganic Hybrid Perovskite Nanosheets for Nanogenerators," Nano Energy, vol. 86, 106039 (2021).

[8]  G.  Huang,  et.  al.,  "Achieving  Ultrahigh  Piezoelectricity  in  Organic-Inorganic  Vacancy-Ordered Halide Double Perovskites for Mechanical Energy Harvesting,"  ACS Energy Letters, vol. 6, 16-23 (2021).

[9]  B. Sun, et. al.,  "Monolayer Perovskite Bridges Enable Strong Quantum Dot Coupling for Efficient Solar Cells," Joule, vol.4, 1542-1556 (2020).

[10]  D. Ma, et. al.,  "Chloride Insertion-Immobilization Enables Bright, Narrowband, and Stable Blue Emitting Perovskite Diodes,"  Journal of  the American Chemical Society (JACS), vol. 142 (11), 5126-5134 (2020).