Dye-sensitized solar cells: Fundamentals, Device Characterizations and Applications

Assistant Professor Syed Ghufran Hashmi, University of Oulu; Dr Janne Halme, Aalto University-Finland; Prof Anders Hagfeldt, EPFL University-Switzerland; Prof. Shahzada Ahmad, BCMaterials-Basque center for materials, applications & nanostructures -Spain
29.9.2020 10:00 to 14.10.2020 13:00

Course Organizer and enrollment: Assistant Professor Syed Ghufran Hashmi; ghufran.hashmi(at)oulu.fi; Telephone: +358451199233

Extent: 5 ECTS

Number of students: App. 15 doctoral students 



Dye-sensitized solar cells (DSSCs) 1-3 (often termed as Grätzel’s solar cells) have been considered as one of the next generations based advanced photovoltaic devices, which do not keep an immense potential for bulk electricity production at affordable cost but also provide unique opportunities from the perspective of building integrated photovoltaics (BIPV) applications as well as the power generation for IoT devices to be operated under low light intensity conditions indoors 4-5.

The purpose of this course is to provide an opportunity to doctoral students to get familiarized the concept and importance of DSSCs based photovoltaics as next generation of photovoltaic devices, which can be produced by applying high throughput and industrially scalable fabrication method such as screen printing or inkjet printing 3, 6and utilizing abundantly available materials such as titania (TiO2) or carbon nanoparticles 6-7.

The course will be comprised of four lectures from the prominent scholars of the field, which will provide overview, theoretical background, operating principles and device characterization techniques to the doctoral students. After that, the course will be further supported with 1-3 days of intense laboratory training to give these doctoral students hands-on experience for making laboratory-sized DSSCs. At the same time, the students will also receive hands on training for basic DSSCs characterizations such as J-V curve measurement of the DSSCs under full sun light of an artificial solar simulator, eleiictrochemical characterizations via performing electrochemical impedance spectroscopy (EIS) on the fabricated DSSCs and incident photon to collected electron efficiency (IPCE) measurements (Figure 2).

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Figure 2: The students will get hands on experience for the numerous characterization techniques in order to determine the photovoltaic performance of DSSCs such as a) J-V curve measurements to determine the solar-to-electrical energy conversion b) electrochemical impedance spectroscopy to analyse the factors affecting the overall photovoltaic performance of the DSSCs and c) the incident photon to collected electron efficiency (IPCE) measurements to determine how much current could be generated at different wavelengths of the spectrum 3.  


Week 40

Lecture 1 (Online-Teaching) Tuesday 29.09.2020 (10:00 – 11:00) Finnish Time

Title: Overview on Dye-sensitized solar cells: Opportunities and Limitations by Dr Ghufran Hashmi (Oulu University – Finland).

Lecture 2 (Online-Teaching) Thursday 01.10.2020 (14:00 – 15:00) Finnish Time

Title: Device Physics of Dye-sensitized Solar Cells by Dr Janne Halme (Aalto University – Finland).

Week 41

Lecture 3 (Online-Teaching) Monday 05.10.2020 (10:00 – 11:00) Finnish Time

Title: Dye-sensitized Solar Cells: Matter of Interactions by Prof. Anders Hagfeldt (EPFL University-Switzerland)

Lecture 4 (Online-Teaching) Wednesday 07.10.2020 (11:00 – 12:00) Finnish Time

Title: New redox shuttle and electro-catalyst for dye sensitized solar cells by Prof. Shahzada Ahmad (BCMaterials-Basque center for materials, applications & nanostructures - Spain)

Week 42 


1. Dye-sensitized solar cells fabrication and characterization training

 (Monday) (12.10.2020, 10:00-13:00)

 (Tuesday) (13.10.2020, 10:00-13:00)

 (Wednesday) (14.10.2020, 10:00-13:00)

2. Writing task (Review article, Topic will be announced later, and sections will be distributed in teams of students)

Background Reading:

1. Device Physics of Dye Solar Cells by J. Halme et al.  


2. Dye-sensitized solar cells by A. Hagfeldt et al.


3. Metal free sensitizer and catalyst for dye sensitized solar cells by S. Ahmad et al.


4. Review of materials and manufacturing options for large area flexible dye solar cells by G. Hashmi et al.


5. Review of stability for advanced dye solar cells by Imran Asghar et al.



[1] O'Regan, B., Grätzel, M. A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films. Nature 353, 737–740 (1991). [2] G. Hashmi et al, Review of materials and manufacturing options for large area flexible dye solar cells, Renewable and Sustainable Energy Reviews 15 (2011) 3717–3732. [3] Ghufran Hashmi et al, Dye-sensitized solar cells with inkjet printed dyes, Energy Environ. Sci., 2016,9, 2453-2462. [4] Freitag, M., Teuscher, J., Saygili, Y. et al. Dye-sensitized solar cells for efficient power generation under ambient lighting. Nature Photon 11, 372–378 (2017) [5] H. Michael et al, Dye-sensitized solar cells under ambient light powering machine learning: towards autonomous smart sensors for the internet of things, Chem. Sci., 2020,11, 2895-2906. [6] Ghufran Hashmi et al, High performance dye-sensitized solar cells with inkjet printed ionic liquid electrolyte, Nano Energy, (2015) 17, 206–215. [7] Murakami et al, Highly Efficient Dye-Sensitized Solar Cells Based on Carbon Black Counter Electrodes Journal of The Electrochemical Society, 153, 12, A2255-A2261, 2006.


Last updated: 10.8.2020