Implications of TiO2 surface functionalization on polycrystalline mixed halide perovskite films and photovoltaic devices

We exploit TiO2 surface functionalization as a tool to induce the crystallization process of CH3NH3PbI3xClx perovskite thin films resulting in a reduction of the degree of orientation of the (110) crystallographic planes. Notably, the variation of the film crystalline orientational order does not affect the photovoltaic performances of the perovskite-based devices, whose efficiency remains mostly unchanged. Our findings suggest that other factors are more significant in determining the device efficiency, such as the non-homogenous coverage of the TiO2 surface causing charge recombination at the organic/TiO2 interface, defect distribution on the perovskite bulk and at the interfaces, and transport in the organic or TiO2 layer. This observation represents a step towards the comprehension of the perovskite film peculiarities influencing the photovoltaic efficiency for high performance devices.

Magnetic resonance spectroscopy. Data analysis for clinical applications

This text is taken from the postgraduate thesis, which one of the authors (A.B.) developed for the degree of Medical Physicist in the School on Medical Physics of the University of Florence. The text explores the feasibility of quantitative Magnetic Resonance Spectroscopy as a tool for daily clinical routine use. The results and analysis comes from two types of hyper spectral images: the first set are hyper spectral images coming from a standard phantom (reference images); and hyper spectral images obtained from a group of patients who have undergone MRI examinations at the Santa Maria Nuova Hospital. This interdisciplinary work stems from the IFAC-CNR know how in terms of data analysis and nanomedicine, and the clinical expertise of Radiologists and Medical Physicists. The results reported here, which were the subject of the thesis, are original, unpublished, and represent independent work.

Memorie della R. Accademia delle scienze dell'Istituto di Bologna, Classe di scienze fisiche.

Publisher varies: Industrie grafiche italiane, 1921-1922; Coop. tipografica Azzoguidi, 1923-1943.

Il Bollettino di matematiche e di scienze fisiche e naturali

Vol. 1-7 irregular; v. 8-18 monthly from Nov. to June

Memorie della Classe di scienze fisiche, matematiche e naturali /

Mode of access: Internet.

Memorie della Reale accademia delle scienze di Torino.

Vols. for 1936-1942 issued in 2 pts. called: Parte prima, Classe di scienze fisiche, matematiche e naturali, and: Parte seconda, Classe di scienze morali, storiche e filologiche.

Plasmonic nanostructure enhanced graphene-based photodetectors

Graphene exhibits electrical and optical properties promising for future applications in ultra-fast photonics[1]. High carrier mobility and Fermi velocity[2, 3] combined with its constant absorption over the visible wavelength range to the near-infrared[4] potentially allow its application for photodetection over a broad wavelength spectrum, operating at high frequencies. However, absorption being 2.3% per monolayer[4], responsiv-ity of these devices is rather low[5, 6]. Here we show that by combining graphene-based photodetectors with metal-nanostructures, plasmonic effects lead to an increased respon-sivity. © 2011 by the Author(s); licensee Accademia Peloritana dei Pericolanti, Messina, Italy.

Atti della R. Accademia delle scienze di Torino.

Vols. 1-32, Classe di scienze fisiche, matematiche i naturali and Classe di scienze morali issued together in one volume; v. 33-41 issued with separate t.-p. and paging.

Atti della R. accademia delle scienze di Torino.

Volumes 45-47, 49-62 issued with Classe de scienze morali, storiche e filologiche in one volume.

Annali della Scuola normale superiore di Pisa, Classe di scienze

Mode of access: Internet.

Memorie.

Ser. 8, sezione 2., v. 19 not published.

Atti della Reale Accademia dei Lincei.

Ser. 2, v. 3 issued in 3 pts.: pt. 1. Transunti; pt. 2. Memorie della Classe di scienze fisiche, matematiche e naturali; pt. 3. Memorie della Classe di scienze morali, storiche e filologiche.