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Dr Riccardo Di Pietro

Dr Riccardo Di Pietro

Research Scientist at Hitachi Cambridge Laboratory

Fellow of St Edmund's College

Office Phone: +44 (0) 1223 442936


I studied Physics at the University of Bologna in Italy, where I graduated in 2006 with a thesis on the charge transport properties of small semiconducting molecules. After my graduation I worked for one year at XGROUP Solar Industries as a process engineer in a silicon solar cells production facility. I then moved to Cambridge, where I got my PhD in 2012 on the characterisation of electronic defects in organic semiconductors. From 2012 to 2014 I was a postdoctoral research associate in the Physik weicher Materie group led by Prof. Dieter Neher, studying the impact of microstructure on the charge transport properties of polymer semiconductors. Since 2014 I am a research scientist at the Hitachi Cambridge Laboratory, working on the charge and spin transport properties of organic semiconductors.

Research Interests

I am currently working on the optical injection and detection of spin polarised currents in organic semiconductors as part of a joint collaboration with the Optoelectronics group, University of Mainz,  Imperial College London and the Czech Academy of Science. I am also conducting research on the charge transport properties of semicrystalline polymer semiconductors.

Key Publications

R. Di Pietro, I. Nasrallah, J. Carpenter, E. Gann, L. S. Kolln, L. Thomsen, D. Venkateshvaran, K. O'hara, A. Sadhanala, M. Chabinyc, C. R. Mcneill, A. Facchetti, H. Ade, H. Sirringhaus and D. Neher, Adv. Funct. Mater. 28, 28, 1 (2016), Coulomb Enhanced Charge Transport in Semicrystalline Polymer Semiconductors

G. Lu, R. Di Pietro, L. S. Kolln, I. Nasrallah, L. Zhou, S. Mollinger, S. Himmelberger, N. Koch, A. Salleo and D. Neher, Advanced Electronic Materials 28, 28, 1600267 (2016), Dual-Characteristic Transistors Based on Semiconducting Polymer Blends

R. Di Pietro, D. Venkateshvaran, A. Klug, E. J. W. List-Kratochvil, A. Facchetti, H. Sirringhaus and D. Neher, Appl. Phys. Lett. 104, 19, 193501 (2014), Simultaneous extraction of charge density dependent mobility and variable contact resistance from thin film transistors

R. Steyrleuthner, R. Di Pietro, B. A. Collins, F. Polzer, S. Himmelberger, M. Schubert, Z. H. Chen, S. M. Zhang, A. Salleo, H. Ade, A. Facchetti and D. Neher, J. Am. Chem. Soc. 136, 11, 4245 (2014), The Role of Regioregularity, Crystallinity, and Chain Orientation on Electron Transport in a High-Mobility n-Type Copolymer

R. Di Pietro, D. Fazzi, T. B. Kehoe and H. Sirringhaus, J. Am. Chem. Soc. 134, 36, 14877 (2012), Spectroscopic Investigation of Oxygen- and Water-Induced Electron Trapping and Charge Transport Instabilities in n-type Polymer

R. Di Pietro and H. Sirringhaus, Adv. Mater. 24, 25, 3367 (2012), High Resolution Optical Spectroscopy of Air-Induced Electrical Instabilities in n-type Polymer Semiconductors