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WELCOME TO DIMITROV LAB

We use laser spectroscopy to develop new generation semiconducting materials and solar energy technologies. We love building new spectroscopy experiments and learning about photochemistry and photophysics. 

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UPDATES FROM THE LAB

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"Xuan organised an engaging activity at the Festival of Communities 2023, making solar cells in  Stepney Green Park. Levon was there actively helping. "
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"Levon won the best poster prize at RSC's Next Generation Materials for Solar Photovoltaics 2024 meeting. "
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"Stoichko and Xuan had a successful showcase of our in-situ analysis method for printing perovskite PV at QMUL's Night of Science and Engineering 2023. "
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"Yifan presented his work on 2D substrates for all-inorganic perovskite PV at the January 2024 QMUL PV Symposium "

RESEARCH

We are an experimental Photochemistry and Photophysics group, which utilises a range of spectroscopic tools to develop novel functional semiconductors, with the main focus on solar energy harvesting technologies. Our interest is in understanding the response of materials to light absorption on the femtosecond to millisecond timescales and the implications for material performance in devices like photovoltaics. 

We also work on the scale-up of printed photovoltaics. Specifically, we have developed a new in-situ characterisation kit to analyse the printing process of perovskite or organic photovoltaics providing us with unique insights into the material formation kinetics.

Time-resolved laser spectroscopy techniques like transient absorption and photoluminescence spectroscopy are the main tools we use in combination with material and device fabrication to discover new opportunities for material performance enhancement.

Our projects explore organic, hybrid perovskite and quantum dot semiconductors. We collaborate with synthetic chemists, materials scientists and engineers from QMUL, The University of Cambridge, UCL, Imperial College London and Swansea University.

Our in-situ analysis for printing PV

We have build a unique optical spectroscopy set-up for analysis of printing and post treatment to speed up process optimisation without the need for full scale device fabrication

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Printing perovskite devices

Currently our focus is on developing industrially scalable printing methodology for organic-inorganic perovskite photovoltaics based on slot-die coating.

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In-situ analysis of printed films

Our portable in-situ characterisation set-up probes film drying and crystal growth during or after printing.

Case studies

Using our in-situ analysis approach we have printed 25x75 mm high quality MAPI perovskite films with operate at up to 16% power conversion efficiency.

MEET THE DIMITROV LAB

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STOICHKO DIMITROV

Group leader

Senior lecturer at the Department of Chemistry of QMUL

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Zeyin Min

PhD student

Zeyin investigates the potential of in-situ optical analysis in printing high performance and stable solar cells.

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CHRISTIAN OSBORNE

PhD student

Christian's PhD project is on excited state diffusion in organic semiconductors

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Dr Yifan Liu

Visitin Researcher

Yifan works on printing all inorganic perovskite solar cells

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LEVON ABELIAN

PhD student

Levon's PhD project is on UV down conversion for PV devices

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Chun Hei Lao

PhD student

Chun Hei works on Scale up of electrode interlayers for fully printed perovskite solar cells

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COME WORK OR STUDY WITH US

Postdoc/Researcher; we are always looking for candidates interested to join our group. Please, get in touch to discuss opportunities by sending your CV and cover letter to s.dimitrov@qmul.ac.uk.  

Interested in PhD studies, we support outstanding students for various international PhD scholarship routes. Examples include China Scholarship Council (CSC)Commonwealth Scholarships; CONACYT (Mexico).  Visit this page for details.

Interested in MSc studies, you can join the group for a year-long project via QMUL Chemistry MSc programme. Visit this page for details

CONTACT DETAILS

Dr Stoichko Dimitrov

Lecturer in Chemistry


Department of Chemistry

Queen Mary University of London

Joseph Priestley Building, Mile End Road, London E1 4NS
email: s.dimitrov@qmul.ac.uk

T: +44 (0)20 7882 8884

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