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Annamaria Petrozza

Senior Researcher Tenured - Principal Investigator
Senior Scientist - Tenured

Research Line

Advanced Materials for Optoelectronics


CNST@PoliMi Milano


Via Pascoli 70/3
+39 022 3999 871
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Annamaria Petrozza was awarded a Master of Science in Electronic Engineering (emphasis on Devices, design and modelling) at Ecole Supèrieure d’Electricité (Paris, France) in 2003 under the T.I.M.E. (Top Industrial Manager in Europe) program. In 2004 she got a Master degree in Electronic Engineering (emphasis on Optoelectronics) at Politecnico of Milan. In 2008 she received her PhD in Physics from the University of Cambridge (UK) with a thesis on the study of optoelectronic processes at organic and hybrid semiconductors interfaces under the supervision of Dr. J.S. Kim and Prof Sir R.H. Friend. From July 2008 to December 2009 she worked as research scientist at the Sharp Laboratories of Europe, Ltd on the development of new market competitive solar cell technologies (Dye Sensitized Solar cells/Colloidal Quantum Dots Sensitized Solar cells). Her main tasks were to establish key needs of PV market, write research proposals to submit to the Sharp Business Group, and design and implement experiments. In 2010 she joined the newly founded Center for Nano Science and Technology (CNST) of IIT in Milan. Since 2013 she leads the “Advanced Materials for Optoelectronics” Research Line at CNST.  Her research is focused on the development of new, sustainable, optoelectronic technologies which can be extensively integrated in the everyday life.

She got the “Innovators Under 35 Italy 2014” award by the MIT Technology Review for her pioneering work on perovskites. She has been selected among the “Emerging Investigators 2017” by the Royal Society of Chemistry. In 2017 Annamaria received the highly competitive European Research Council Cosolidator grant, a 2.2M Euros award to support excellent and disruptive science.

She is in the editorial board of ACS Energy Letters (ACS), Advanced Energy Materials (Wiley) and Matter (Cell Press) and in February 2019 she joined "Sustainable Energy & Fuels" (RSC) as associated editor.

Annamaria has an h-index of 40 (Scopus, June 2019) with more than 14000 citations and she has been listed among the the “Highly Cited Researcher 2018 (cross field)” by Clarivate Analytics


The research activities are mainly focused on the investigation of the physics behind low cost "future generation" photovoltaic concepts and on the development of associated optoelectronic devices.

The research group she leads is active in fundamental studies on light harvesting and charge generation processes, charge transport and recombination processes  at organic and hybrid interfaces, whilst improving the state-of-the-art device concepts in terms of absolute performance. To achieve so the team deals with materials synthesis and processing, materials characterization and devices design and testing.


On going projects

  • "The role of Softness in the Physics of Defects: Probing Buried Interfaces in Perovskites Optoelectronic Devices" (SOPHY) - ERC-2017-COG (2018-2023)
  • "Perovskite Thin-film Photovoltaics" (PERTPV) - H2020-LCE-07-2017 (2018-2021)
  •  "European School on Artificial Leaf: Electrodes & Devices (eScaled) - Marie Skłodowska Curie Action European Training Network (2018-2022)
  • "Making Perovskites Truly exploitable" (MAESTRO) - Marie Skłodowska Curie Action European Training Network (2017-2021)
  • PEROVSKITE OPTOELECTRONICS  - MSCA-RISE-Marie Skłodowska- Curie Research and Innovation Staff Exchange  (2015-2019)


Concluded Projects

  • "Dye Sensitized solar cells with enhanced stability" (DESTINY) – Marie Curie Initial Training Network (2012-2016).
  • “Probing Hybrid Interfaces of High Performance Solid-State Solar Cells” The Royal Society International Exchanges Scheme 2012/R2 (2013-2014) - in collaboration with Dr H.J. Snaith (University of Oxford).
  • " Meso-superstructured Hybrid Solar Cells " (MESO) - FP7-NMP-2013-SMALL-7 (2013-2016)
  • Green nanomaterials for next-generation photovoltaics (GREENS) - Fondazione Cariplo (2014-2016)
  • "IperLuce" - Fondazione Cariplo (2015-2017)
  • " SupramolecularlY eNgineered arCHitectures for optoelectRonics and photONICS: a multi-site initial training action (SYNCHRONICS) - Innovative Training Networks (2015-2018)

Selected Publications


  • A. Petrozza and F. De Angelis "Clues from Defects Photochemistry" Nature materials 17, 38, 2018
  • D. Cortecchia et al, “Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation”, J. Am. Chem. Soc., 139, 39, 2017.
  • T. Leijtens et al, “Carrier trapping and recombination: the role of defect physics in enhancing the open circuit voltage of metal halide perovskite solar cells” Energy Environ. Sci., 9, 3472-3481, 2016.
  • Q. A. Akkerman et al, “Strongly emissive perovskite nanocrystal inks for high-voltage solar cellsNature Energy, 2,16194, 2016.
  • James M Ball and Annamaria Petrozza, “Defects in perovskite-halides and their effects in solar cells” Nature Energy, 1, 16149, 2016
  • G. Grancini & A.R. Srimath Kandada et al., “Role of microstructure in the electron–hole interaction of hybrid lead halide perovskites” Nature Photonics, doi:10.1038/nphoton.2015.151, 2015C.
  • V. D’Innocenzo et al., “Excitons versus Free Charges in Organo-lead Tri-Halide PerovskitesNature Communications, 5, 3586, 2014. (Highlighted in the editorial “Temporary bonds” Nature Materials 13, 538 (2014)),
  • S. D. Stranks et al. "Electron-Hole Diffusion Lengths Exceeding 1 Micron in an Organ-ometal Tri-halide Perovskite Absorber", Science 342, 341, 2013





  • 2018                     Highly Cited Researcher 2018 (cross field) – Clarivate Analytics

    2017                     Royal Society of Chemistry- Emerging Investigators 2017

    2013                     “Innovators Under 35 Italy 2014”, MIT Technology Review – Italian Section 

    2008                   Scholarship “Fondazione Angelo della Riccia”, Switzerland

    2008                  “Lundgren Award” - University of Cambridge, UK

    2007-2008       “Atkinson Scholarship” Clare College, University of Cambridge, UK

    2004-2007           EPSRC PhD Fellowship, Cavendish Laboratory, University of Cambridge, UK

    2004                  “Vaudo Prize”- Best Master Thesis - Rotary Club Milano, Italy

    2001-2003  T.I.M.E – Top Industrial Managers of Europe - Master scholarship, Italy


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I numeri di IIT

L’Istituto Italiano di Tecnologia (IIT) è una fondazione di diritto privato - cfr. determinazione Corte dei Conti 23/2015 “IIT è una fondazione da inquadrare fra gli organismi di diritto pubblico con la scelta di un modello di organizzazione di diritto privato per rispondere all’esigenza di assicurare procedure più snelle nella selezione non solo nell’ambito nazionale dei collaboratori, scienziati e ricercatori ”.

IIT è sotto la vigilanza del Ministero dell'Istruzione, dell'Università e della Ricerca e del Ministero dell'Economia e delle Finanze ed è stato istituito con la Legge 326/2003. La Fondazione ha l'obiettivo di promuovere l'eccellenza nella ricerca di base e in quella applicata e di favorire lo sviluppo del sistema economico nazionale. La costruzione dei laboratori iniziata nel 2006 si è conclusa nel 2009.

Lo staff complessivo di IIT conta circa 1440 persone. L’area scientifica è rappresentata da circa l’85% del personale. Il 45% dei ricercatori proviene dall’estero: di questi, il 29% è costituito da stranieri provenienti da oltre 50 Paesi e il 16% da italiani rientrati. Oggi il personale scientifico è composto da circa 60 principal investigators, circa 110 ricercatori e tecnologi di staff, circa 350 post doc, circa 500 studenti di dottorato e borsisti, circa 130 tecnici. Oltre 330 posti su 1400 creati su fondi esterni. Età media 34 anni. 41% donne / 59 % uomini.

Nel 2015 IIT ha ricevuto finanziamenti pubblici per circa 96 milioni di euro (80% del budget), conseguendo fondi esterni per 22 milioni di euro (20% budget) provenienti da 18 progetti europei17 finanziamenti da istituzioni nazionali e internazionali, circa 60 progetti industriali

La produzione di IIT ad oggi vanta circa 6990 pubblicazioni, oltre 130 finanziamenti Europei e 11 ERC, più di 350 domande di brevetto attive, oltre 12 start up costituite e altrettante in fase di lancio. Dal 2009 l’attività scientifica è stata ulteriormente rafforzata con la creazione di dieci centri di ricerca nel territorio nazionale (a Torino, Milano, Trento, Parma, Roma, Pisa, Napoli, Lecce, Ferrara) e internazionale (MIT ed Harvard negli USA) che, unitamente al Laboratorio Centrale di Genova, sviluppano i programmi di ricerca del piano scientifico 2015-2017.

IIT: the numbers

Istituto Italiano di Tecnologia (IIT) is a public research institute that adopts the organizational model of a private law foundation. IIT is overseen by Ministero dell'Istruzione, dell'Università e della Ricerca and Ministero dell'Economia e delle Finanze (the Italian Ministries of Education, Economy and Finance).  The Institute was set up according to Italian law 326/2003 with the objective of promoting excellence in basic and applied research andfostering Italy’s economic development. Construction of the Laboratories started in 2006 and finished in 2009.

IIT has an overall staff of about 1,440 people. The scientific staff covers about 85% of the total. Out of 45% of researchers coming from abroad 29% are foreigners coming from more than 50 countries and 16% are returned Italians. The scientific staff currently consists of approximately 60 Principal Investigators110 researchers and technologists350 post-docs and 500 PhD students and grant holders and 130 technicians. External funding has allowed the creation of more than 330 positions . The average age is 34 and the gender balance proportion  is 41% female against 59% male.

In 2015 IIT received 96 million euros in public funding (accounting for 80% of its budget) and obtained 22 million euros in external funding (accounting for 20% of its budget). External funding comes from 18 European Projects, other 17 national and international competitive projects and approximately 60 industrial projects.

So far IIT accounts for: about 6990 publications, more than 130 European grants and 11 ERC grants, more than 350 patents or patent applications12 up start-ups and as many  which are about to be launched. The Institute’s scientific activity has been further strengthened since 2009 with the establishment of 11 research nodes throughout Italy (Torino, Milano, Trento, Parma, Roma, Pisa, Napoli, Lecce, Ferrara) and abroad (MIT and Harvard University, USA), which, along with the Genoa-based Central Lab, implement the research programs included in the 2015-2017 Strategic Plan.