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Doping of organic semiconductors as a new approach to printed solar harvesting devices

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  • Full or part time
    Dr S Dimitrov
  • Application Deadline
    Applications accepted all year round

Project Description

Applications are invited for a Queen Mary University of London – China Scholarship Council PhD or alternative external scholarships ( starting in October 2020 to work in the laboratory of Dr Stoichko Dimitrov in the Department of Chemistry and in close collaboration with Prof. William Gillin from the School of Physics and Dr Christian Nielsen from the Department of Chemistry.

Research Environment

The School of Biological and Chemical Sciences at Queen Mary is one of the UK’s elite research centres, according to the 2014 Research Excellence Framework (REF). We offer a multi-disciplinary research environment and have approximately 160 PhD students working on projects in the biological, chemical and psychological sciences. Our students have access to a variety of research facilities supported by experienced staff, as well as a range of student support services.

The student would have access to ultrafast laser spectroscopy and electron microscopy equipment at QMUL, Imperial College London and the Central Laser Facility at Didcot, as well as QMUL’s advanced clean room facilities. The student would have the chance for regular travel to UK national and international conferences and to collaborate with groups from QMUL and the Institute of Chemistry, Chinese Academy of Sciences.

Training and Development

Our PhD students become part of Queen Mary’s Doctoral College which provides training and development opportunities, advice on funding, and financial support for research. Our students also have access to a Researcher Development Programme designed to help recognise and develop key skills and attributes needed to effectively manage research, and to prepare and plan for the next stages of their career.

The successful candidate will work at the interface between experimental materials chemistry and semiconductor physics by developing expertise in state-of-the-art laser spectroscopic analysis of excited states and semiconductor material processing. These would enable them to build expertise in developing new materials for high performance organic optoelectronic devices.

Project Details

Organic semiconductors are extremely attractive materials for applications in variety of optoelectronic technologies like solar cells, nano-sensors and photocatalysis. However, their structure does not allow the diffusion of excited states at lengths comparable to standard inorganic semiconductors like silicon. This puts many restrictions on their possible applications. Recent advances in their structural manipulation and processing techniques have opened new opportunities to develop materials with longer diffusion lengths. As a result, devices with high efficiencies can be developed for more sustainable electricity and fuel production.

This project aims to advance the field of organic optoelectronics by working on the following two aims.
- To develop deep understanding of the structural limitations of organic semiconductors to excited state diffusion based on laser spectroscopy studies of electronic and vibrational transitions.
- To create new material and device fabrication approaches for long excited state diffusion and more efficient organic semiconductors. Attention will be paid to the influence of doping on the diffusion process, where variety of methods for structural control would be explored.

Useful links


Applications are invited from candidates with, or expecting to be awarded, an MSc degree in the areas of physical chemistry, materials science or optics.

Applicants are also required to provide evidence of their proficiency in English language skills. For further entry requirements and to apply, please follow the link: Please see our English language requirements page for details:


Applicants are encouraged to contact Dr Dimitrov on [Email Address Removed] prior to their submission by sending a CV, cover letter describing their research interests and expertise, and the names of two referees.

China Scholarship Council applicants must submit their online application to Queen Mary by 12th January 2019.

The School of Biological and Chemical Sciences is committed to promoting diversity in science; we have been awarded an Athena Swan Bronze Award. We positively welcome applications from underrepresented groups.

Funding Notes

This position is open to candidates applying for funding from the China Scholarship Council. Please see our website for details:

Applicants applying for alternative external scholarships may also be considered and are welcome to enquire about the project. Please see our website for examples:


1. Trap-limited exciton diffusion in organic semiconductors. Adv. Mater. 2014, 26, 1912.
2. Spectroscopic Investigation of the Effect of Microstructure and Energetic Offset on the Nature of Interfacial Charge Transfer States in Polymer: Fullerene Blends. J. Am. Chem. Soc. 2019, 141, 4634.
3. Polaron pair mediated triplet generation in polymer/fullerene blends. Nat. commun. 2016, 6, 6501.
4. High-efficiency and air-stable P3HT-based polymer solar cells with a new non-fullerene acceptor. Nat. Commun. 2016, 7, 11585.

How good is research at Queen Mary University of London in Chemistry?

FTE Category A staff submitted: 14.00

Research output data provided by the Research Excellence Framework (REF)

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