Srinivasa Srimath

About

Full name: Srinivasa Maruthi AJAY RAM SRIMATH KANDADA.
Born in 1986 in Tirupathi, India.
Nationality: Indian

Research Interests:

• Photo-excitation dynamics in lead halide perovskites.
• Advanced non-linear optical spectroscopy of semiconductors.
• Entangled photon spectroscopy of excitonic correlations.

Technical Expertise:

• Coherent non-linear spectroscopy.
• Ultrafast pump-probe spectroscopy.
• Time resolved photoluminescence spectroscopy/microscopy.
• Electric field modulation spectroscopy.
• Entangled photon generation and characterization.

Reseach Employment:

• Sept 2018 - Present: Researcher, CNST IIT@Milano, Italy
• July 2017 - August 2018: Visiting researcher, Georgia Tech, USA
• Oct 2016-Jun 2017: Post-doctoral Researcher, Universite de Montreal, Canada                          
• May 2013 - Sept 2016: Post-doctoral Researcher, CNST, IIT@Milano, Italy
• Feb 2010- March 2012: Marie-Curie Early Stage Researcher, Politecnico di Milano, Italy
• Jan- Feb 2012: Visiting student, University of Sheffield, UK.
• May-Dec 2009: Junior Research Fellow, Tata Institute of Fundamental Research, India.
• April-June 2008: Summer Intern, National University of Singapore, Singapore

Education:

• 2010 - 2013: PhD in Physics from Politecnico di Milano. (Thesis: Ultrafast dynamics in Molecular Agrregates and Interfaces)
• 2007 - 2009: Masters in Physics from Sri Sathya Sai University, India. (CGPA: 5.00/5.00; Thesis: FDTD simulation of light confinement in Silver nano-cylinders).

Selected Publications

1. F. Thouin, D. Valverde-Chavez, C. Quarti, D. Cortecchia, I. Bargigia, D. Beljonne, A. Petrozza, C. Silva and A. R. S. Kandada, Phonon coherences reveal the polaronic character of the excitons in two-dimensional lead-halide perovskites, ArXiV: 1807:10539.
2. S. Neutzner, F. Thouin, D. Cortecchia, A. Petrozza, C. Silva and A. R. S. Kandada, Exciton-polaron spectral structures in two-dimensional hybrid lead-halide perovskites. Phys. Rev. Mater., 2, 064605.
3. H. Li, A. Piryatinski, A. R. S. Kandada, C. Silva, E. R. Bittner, Photon entanglement entropy as a probe of many-body correlations and fluctuations. ArXiv: 1805.07420.
4. F. Thouin, S. Neutzner, D. Cortecchia, V. A. Dragomir, R. Leonelli, C. Soci, T. Salim, L. Y. Ming, A. Petrozza, A. R. S. Kandada and C. Silva, Stable bi-excitons in two-dimensional metal-halide perovskites with strong dynamic lattice disorder, Phys. Rev. Mater., 2, 034001.
5. H. Li, A. Piryatinski, J. Jerke, A. R. S. Kandada, C. Silva, E. R. Bittner, Probing dynamical symmetry breaking using quantum-entangled photons, Quantum. Sci. Technol., 3, 015003.
6. G. Batignani*, G. Fumero*, A. R. S. Kandada*, G. Cerullo, M. Gandini, C. Ferrante, A. Petrozza and T. Scopigno (* equal contribution), Probing femtosecond lattice displacement upon photo-carrier generation in lead halide perovskite, Nature Communications 9, 1971.
7. I. Bargigia, E. Zucchetti, A. R. S. Kandada, M. Moreira, C. Bossio, W. P. D. Wong, P. B. Miranda, P. Decuzzi, C. Soci, C. D’Andrea and G. Lanzani, The photo-physics of polythiophene nanoparticles for biological applications, ChemBioChem (DOI: 10.1002/cbic.201800167) (suggested as Very Important Paper).

2017

8. P. Grégoire, A. R. S. Kandada, E. Vella, C. Tao, R. Leonelli, C. Silva, Incoherent population mixing contributions to phase-modulation two-dimensional coherent excitation spectra, J. Chem. Phys., 147, 114201 (2017).
9. D. Cortecchia, S. Neutzner, A. R. S. Kandada, E. Mosconi, D. Meggiolaro, F. De Angelis, C. Soci and A. Petrozza, Broadband emission in two-dimensional hybrid perovskites: the role of structural deformation, J. Am. Chem. Soc.,139, 39-42.
10. P. J. Ceglielski, S. Neutzner, C. Porscharis, H. Lerch, J. Bolten, S. Suckow, A. R. S. Kandada, B. Chmielak, A. Petrozza and A. L. Giesecke, Integrated perovskite lasers on a silicon nitride waveguide platform by cost-effective high throughput fabrication, Optics Express, 25, 13100 – 13206.
11. A. J. Barker, A. Sadhanala, F. Deschler, M. Gandini, S. P. Senanayak, P. M. Pearce, E. Mosconi, A. J. Pearson, Y. Wu, A. R. S. Kandada, T. Leijtens, F. De Angelis, S. E. Dutton, A. Petrozza and R. H. Friend, Defect-assisted photoinduced halide segregation in mixed halide perovskite thin films, ACS Energy Lett., 2, 1416-1424.
12. C. Tao, J. Van Der Velden, L. Cabau, N. F. Montcada, S. Neutzner, A. R. S. Kandada, S. Marras, L. Brambilla, M. Tommasini, W. Xu, R. Sorrentino, A. Perinot, M. Caironi, C. Bertarelli, E. Palomares and A. Petrozza, Fully solution processed n-i-p like perovskite solar cells with planar junction: How the charge extracting layer determines the open circuit voltage, Adv. Mater., 1604493.

2016

13. A. R. S. Kandada and A. Petrozza. Research update: Luminescence in lead halide perovskites, APL Materials, 4, 091506.
14. A. R. S. Kandadaand A. Petrozza. Photophysics of hybrid lead halide perovskites: The role of microstructure, Acc. Chem. Res., 49, 536-544.
15. A. R. S. Kandada, S. Neutzner, V. D’Innocenzo, F. Tassone, M. Gandini, Q. A. Akkerman, M. Prato, L. Manna, A. Petrozza and G. Lanzani, Non-linear carrier interactions in lead halide perovskites and the role of defects, J. Am. Chem. Soc., 138, 13806-13811.
16. S. G. Motti, M. Gandini, A. J. Barker, J. M. Ball, A. R. S. Kandada and A. Petrozza. Photoinduced emissive trap states in lead halide perovskite semiconductors, ACS Energy. Lett., 1, 726-730.
17. S. Neutzner, A. R. S. Kandada, G. Lanzani and A. Petrozza. A dual phase architecture for efficient amplified spontaneous emission in lead iodide perovskites, J. Mater. Chem. C., 4, 4630-4633.
18. J. Shamsi, A. Abdelhady, S. Accornero, M. P. Arciniegas, L. Goldoni, A. R. S. Kandada, A. Petrozza, L. Manna, N-Methylformamide as a source of methylammonium ions in the synthesis of lead halide perovskite nanocrystals and bulk crystals, ACS Energy Lett., 1, 1042-1048.
19. T. Leijtens, G. Eperon, A. J. Barker, G. Grancini, W. Zhang, J. M. Ball, A. R. S. Kandada, H. J. Snaith and A. Petrozza, 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.
20. Q. A. Akkerman, S. G. Motti, A. R. S. Kandada, E. Mosconi, V. D’Innocenzo, G. Bertoni, S. Marras, B. A. Kamino, L. Miranda, F. De Angelis, A. Petrozza, M. Prato, L. Manna. Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control by a Solution Synthesis Approach, J. Am. Chem. Soc., 138, 1010-1016.
21. M. De Bastiani, G. Dell’Erba, M. Gandini, V. D’Innocenzo, S. Neutzner, A. R. S. Kandada, G. Grancini, M. Binda, M. Prato, J. M. Ball, M. Caironi, and A. Petrozza,  Ion Migration and the Role of Preconditioning Cycles in the Stabilization of the J – V Characteristics of Inverted Hybrid Perovskite Solar Cells, Adv. Energy. Mater., 6, 1501453.

2015

22. T. Leijtans, A. R. S. Kandada, G. Eperon, G. Grancini, V. D'Innocenzo, J. Ball, S. Stranks, H. J. Snaith and A. Petrozza, Modulating the electron-hole interaction in a hybrid lead halide perovskite with an electric field, J. Am. Chem. Soc., 137 (49), 15451-15459.
23. G. Grancini*, A. R. S. Kandada*, J. Frost, A. Barker, M. De Bastiani, M. Gandini, G. Lanzani, A. Walsh and A. Petrozza (*contributed equally), Role of microstructure in the electron–hole interaction of hybrid lead halide perovskites, Nature Photonics, 9, 695-701.
24. C. Tao, S. Neutzner, L. Colella, S. Marras, A. R. S. Kandada, M. De Bastiani, G. Pace, L. Manna, M. Caironi, C. Bertarelli, A. Petrozza, 17.6% steady state efficiency in low temperature processed planar perovskite solar cells, Energy. Environ. Sci., 8, 2365 - 2370.
25. J. P. C. Baena, L. Steier, W. Tress, M. Saliba, S. Neutzner, T. Matsui, F. Giordano, T. J. Jacobsson, A. R. S. Kandada, S. M. Zakeeruddin, A. Petrozza, A. Abate, M. K. Nazeeruddin, M. Grätzel, A. Hagfeldt, Highly efficient planar perovskite solar cells through band alignment engineering, Energy. Environ. Sci., 8, 2928-2934.
26. G. Grancini, V. D'Innocenzo, E. R. Dohner, N. Martino, A. R. S. Kandada, E. Mosconi, F. De Angelis, H. I. Karunadasa, E. T. Hoke, A. Petrozza. CH₃NH₃PbI₃ perovskite single crystals: surface photo-physics and their interaction with the environment. Chem. Sci., 6, 7305-7310.

2014

27. V. D’Innocenzo, A. R. S. Kandada, M. De Bastiani, M. Gandini, A. Petrozza, Tuning the light emission properties by band gap engineering in hybrid lead-halide perovskite, J. Am. Chem. Soc., 136 (51), pp 17730–17733.
28. A. R. S. Kandada, A. Petrozza and G. Lanzani, Ultrafast dissociation of triplets in pentacene induced by an electric field, Phys. Rev. B., 90, 075310.
29. V. D’Innocenzo, G. Grancini, M. J. P. Alcocer, A. R. S. Kandada, S. D. Stranks, M. M. Lee, G. Lanzani, H. J. Snaith, A. Petrozza. Excitons versus free charges in organo-lead tri-halide Perovskites. Nature Communications, 5, 3586.
30. A. R. S. Kandada, S. Guarnera, F. Tassone, G. Lanzani and A. Petrozza. Charge generation at Polymer/Metal Oxide Interface: from molecular scale dynamics to mesoscopic effects. Adv. Func. Mater., 24, 3094.
31. A. Abate, M. Planells, D. J. Hollman, S. D. Stranks, A. Petrozza, A. R. S. Kandada, Y. Vaynzof, S. K. Pathak, N. Robertson, H. J. Snaith, An organic donor-free dye with enhanced open-circuit voltage in solid-state sensitized solar cells. Adv. Energy. Mater., 4, 1400166.
32. I. Kriegel, A. Wisnet, A. R. S. Kandada, F. Scotognella, F. Tassone, C. Scheu, H. Zhang, A. O. Govorov, J. Rodríguez-Fernández and J. Feldmann. Cation exchange synthesis and optoelectronic properties of type II CdTe-Cu_2-xTe nano-heterostructures. J. Mater. Chem. C., 2, 3189-3198.

2013

33. A. R. S. Kandada, G. Grancini, A. Petrozza, S. Perissinotto, D. Fazzi, S. S. K. Raavi and G. Lanzani. Ultrafast Energy Transfer in Ultrathin Donor/Acceptor Blend. Sci. Rep., 3, 2073.
34. A. R. S. Kandada, S. Fantacci, S. Guarnera, D. Polli, G. Lanzani, F. De Angelis and A. Petrozza. Role of Hot Singlet Excited States in Charge Generation at the Black Dye/TiO₂ Interface. ACS Appl. Mater. Interfaces, 5 (10), 4334–4339.
35. G. Della Valle, F. Scotognella, A. R. S. Kandada, M. Zavelani-Rossi, H. Li, M. Conforti, S. Longhi, L. Manna, G. Lanzani and F. Tassone. Ultrafast Optical Mapping of Nonlinear Plasmon Dynamics in Cu_2−xSe Nanoparticles. J. Phys. Chem. Lett., 4, 3337-3344.
36. F. Scotognella, G. Della Valle, A. R. S. Kandada, M. Zavelani-Rossi, S. Longhi, G. Lanzani and F. Tassone. Plasmonics in heavily doped semiconductor nano crystals. Eur Phys J. B., 86, 154.

2012

37. C. Sciascia, R. Castagna, M. Dekermenjian, R. Martel, A. R. S. Kandada, F. Di Fonzo, A. Bianco, et al. Light-Controlled Resistance Modulation in a Photochromic Diarylethene–Carbon Nanotube Blend. J. Phys. Chem. C., 116(36), 9483–9489.

2011

38. F. Scotognella*, G. Della Valle*, A. R. S. Kandada*, D. Dorfs, M. Zavelani-Rossi, M. Conforti, K. Miszta, A. Comin, K. Korobchevskaya, G. Lanzani, L. Manna and F. Tassone (*contributed equally). Plasmon dynamics in colloidal Cu₂-xSe nanocrystals. Nano letters, 11(11), 4711– 4717.

39. S. Perissinotto, M. Garbugli, D. Fazzi, C. Bertarelli, M. Carvelli, A. R. S. Kandada, Z. Yue, K.S. Wong and G. Lanzani. Optical Modulation of Amplied Emission in a Polyuorene-Diarylethene Blend. ChemPhysChem, 12(18), 3619-3623.

Colleagues in Advanced Materials for Optoelectronics See all

Silvia Matti

Tessa Gronchi

Alessandra Brambilla

Annamaria Petrozza

Alessandro Luzio

Andrea Grimoldi

Alex Barker

Peter Topolovsek

Samuele Martani

Daniele Cortecchia

Former Colleagues

Valerio DInnocenzo

Giorgio Dell'Erba

Michele De Bastiani

Sadir Gabriele Bucella

Chen Tao

James Ball

Marcelo Alcocer

Maddalena Binda

Jeroen Van Der Velden

Stefanie Neutzner