@article { ISI:000306768600002, title = {Electrospinning of PHBV/ZnO membranes: structure and properties}, journal = {Fibers and Polymers}, volume = {13}, number = {6}, year = {2012}, month = {JUL}, pages = {692-697}, publisher = {KOREAN FIBER SOC}, address = {KOREA SCIENCE TECHNOLOGY CTR \#501 635-4 YEOGSAM-DONG, KANGNAM-GU, SEOUL 135-703, SOUTH KOREA}, abstract = {

Polyhydroxy butyrate-co-valerate (PHBV) - Zinc oxide (ZnO) nano composite fibers were prepared using electrospinning. The structural and optical properties were studied using Fourier transform infrared spectroscopy (FT-ER), X-ray diffraction (XRD) and photoluminescence study (PL). The morphology observed with scanning electron microscope (SEM) revealed no significant changes in the nano composite fibers as compared to bare polymer. The low concentration of ZnO nanoparticles resulted in an increase in overall crystallinity of the polymer matrix which was confirmed from FT-IR and XRD results. The photoluminescence (PL) study indicated the quenching of visible emission in the composite fibers. The ratio of UV to visible emission (I-uv/I-vis) intensity was found to be 12.8 times enhanced in the composite fibers compared to bare ZnO nanoparticles. The nanofibrous mats are self supported and hence offer potential applications in optoelectronic devices and the biomedical imaging.

}, keywords = {Biomarkers, Biopolymers, electrospinning, ZnO nanoparticles}, issn = {1229-9197}, doi = {10.1007/s12221-012-0692-9}, author = {Naphade, Rounak and Jog, Jyoti Prakash} } @article { ISI:000353930700023, title = {Hybrid perovskite films by a new variant of pulsed excimer laser deposition: a room-temperature dry process}, journal = {Journal of Physical Chemistry C}, volume = {119}, number = {17}, year = {2015}, month = {APR}, pages = {9177-9185}, publisher = {AMER CHEMICAL SOC}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {

A new variant of the classic pulsed laser deposition (PLD) process is introduced as a room-temperature dry process for the growth and stoichiometry control of hybrid perovskite films through the use of nonstoichiometric single target ablation and off-axis growth. Mixed halide hybrid perovskite films nominally represented by CH(3)NH(3)PbI(3-x)A(x) (A = Cl or F) are also grown and are shown to reveal interesting trends in the optical properties and photoresponse. Growth of good quality lead-free CH3NH3SnI3 films is also demonstrated, and the corresponding optical properties are presented. Finally, perovskite solar cells fabricated at room temperature (which makes the process adaptable to flexible substrates) are shown to yield a conversion efficiency of about 7.7\%.

}, issn = {1932-7447}, doi = {10.1021/acs.jpcc.5b02561}, author = {Bansode, Umesh P. and Naphade, Rounak and Game, Onkar S. and Agarkar, Shruti A. and Ogale, Satishchandra} } @article { ISI:000368563000102, title = {Hybrid perovskite quantum nanostructures synthesized by electrospray antisolvent-solvent extraction and intercalation}, journal = {ACS Applied Materials \& Interfaces}, volume = {8}, number = {1}, year = {2016}, month = {JAN}, pages = {854-861}, publisher = {AMER CHEMICAL SOC}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {

Perovskites based on organometal lead halides have attracted great deal of scientific attention recently in the context of solar cells and optoelectronic devices due to their unique and tunable electronic and optical properties. Herein, we show that the use of electrospray technique in conjunction with the antisolventsolvent extraction leads to novel low-dimensional quantum structures (especially 2-D nanosheets) of CH3NH3PbI3- and CH3NH3PbBr3-based layered perovskites with unusual luminescence properties. We also show that the optical bandgaps and emission characteristics of these colloidal nanomaterials can be tuned over a broad range of visible spectral region by compositional tailoring of mixed-halide (I- and Br-based) perovskites.

}, keywords = {2D nanostructure systems, antisolvent-solvent extraction, bandgap tuning, electrospray, nanosheets, perovskite, quantum dots}, issn = {1944-8244}, doi = {10.1021/acsami.5b10208}, author = {Naphade, Rounak and Nagane, Satyawan and Shanker, G. Shiva and Fernandes, Rohan and Kothari, Dushyant and Zhou, Yuanyuan and Padture, Nitin P. and Ogale, Satishchandra} } @article {44166, title = {Synthetic manipulation of hybrid perovskite systems in search of new and enhanced functionalities}, journal = {ChemSusChem}, volume = {10}, year = {2017}, month = {OCT}, pages = {3722-3739}, type = {Article}, abstract = {Over the past few years the organic-inorganic hybrid perovskite systems have emerged as a promising class of materials for photovoltaic and electroluminescent thin-film device applications, in view of their unique set of tunable optoelectronic properties. Importantly, these materials can be easily solution-processed at low temperatures and as such are amenable to facile molecular engineering. Thus, a variety of low-dimensional forms and quantum structures of these materials can be obtained through strategic synthetic manipulations through small molecule incorporation or molecular ion doping. In this Minireview, we specifically focus on these approaches and outline the possibilities of utilizing these for enhanced functionalities and newer application domains.}, doi = {10.1002/cssc.201701093}, author = {Naphade, Rounak and Nagane, Satyawan and Bansode, Umesh and Tathavadekar, Mukta and Sadhanala, Aditya and Ogale, Satishchandra} }