Faculty Publications (CPMU): Recent submissions

Now showing items 41-60 of 214

Improved Performance of Solution-Processed n-Type Organic Field-Effect Transistors by Regulating the Intermolecular Interactions and Crystalline Domains on Macroscopic Scale

Vasimalla, Suresh; Senanayak, Satyaprasad P.; Sharma, Meenakshi; Narayan, K. S.; Iyer, Parameswar Krishnan (American Chemical Society, 2014)

The development of four new n-channel naphthalene diimide (NDI) and perylene diirnide (PDI) copolymers (NDI-Ph, NDI-BT, PDI-Ph, and PDI-BT) and their solution processed thin film transistor (TFT) devices are reported. ...
Single CuTCNQ charge transfer complex nanowire as ultra high responsivity photo-detector

Basori, Rabaya; Das, K.; Kumar, Prashant; Narayan, K. S.; Raychaudhuri, A. K. (Optical Society American, 2014)

We report ultra large photo responsivity R (ratio of photo-generated current to absorbed power) in a single nanowire (NW) device made from a single strand of a nanowire (diameter similar to 30nm and length similar to 200nm) ...
Strategies for Fast-Switching in All-Polymer Field Effect Transistors

Senanayak, Satyaprasad P.; Narayan, K. S. (Wiley-V C H Verlag Gmbh, 2014)

Low-cost printable field effect transistors (FETs) are typically associated with slow switching characteristics. Dynamic response of polymer field effect transistors (PFETs) is a manifestation of time scales involved in ...
Supramolecular P4VP-pentadecylphenol naphthatenebisimide comb-polymer: mesoscopic organization and charge transport properties

Narayan, Rekha; Kumar, Prashant; Narayan, K. S.; Ashe, S. K. (Royal Society of Chemistry, 2014)

A supramolecular comb polymer of pentadecyl phenol (PDP) substituted naphthalenebisimide (PDP-UNBI) with poly(4-vinylpyridine) (P4VP) is reported. The mesoscopic organization within the P4VP(PDP-UNBI), complexes was studied ...
Zn(II) and Cu(II) complexes of a new thiophenebased salphen-type ligand: solution-processable high-performance field-effect transistor materials

Asatkar, Ashish K.; Senanayak, Satyaprasad P.; Bedi, Anjan; Panda, Snigdha; Narayan, K. S.; Zade, Sanjio S. (Royal Society of Chemistry, 2014)

A new thiophene-based salphen-type ligand, 1, and its Cu(II) and Zn(II) complexes, 1 center dot Cu and 1 center dot Zn center dot MeOH, were designed and synthesized. These metal organic complexes (MOCs), with ultra-close ...
Charge generation and transport in efficient organic bulk heterojunction solar cells with a perylene acceptor

Shivanna, Ravichandran; Shoaee, Safa; Dimitrov, Stoichko; Kandappa, Sunil Kumar; Rajaram, Sridhar; Durrant, James R.; Narayan, K. S. (Royal Society of Chemistry, 2014)

The origin of high current density in efficient non-fullerene based bulk heterojunction (BHJ) organic solar cells employing a non-planar perylene dimer (TP) as an electron acceptor and a thiophene based donor polymer ...
Photoconductive NSOM for mapping optoelectronic phases in nanostructures

Das, Anshuman J.; Shivanna, Ravichandran; Narayan, K. S. (Walter De Gruyter Gmbh, 2014)

The advent of optically functional materials with low-intensive processing methods is accompanied by a growing need for high resolution imaging to probe the inherent inhomogeneities in the underlying microstructure. Atomic ...
Polymer optoelectronic structures for retinal prosthesis

Gautam, Vini; Narayan, K. S. (Taylor & Francis Inc, 2014)

This commentary highlights the effectiveness of optoelectronic properties of polymer semiconductors based on recent results emerging from our laboratory, where these materials are explored as artificial receptors for ...
A Polymer Optoelectronic Interface Provides Visual Cues to a Blind Retina

Gautam, Vini; Rand, David; Hanein, Yael; Narayan, K. S. (Wiley-V C H Verlag Gmbh, 2014)
Low cost, rapid synthesis of graphene on Ni: An efficient barrier for corrosion and thermal oxidation

Mogera, Umesha; Kurra, Narendra; Radhakrishnan, Dhanya; Narayana, Chandrabhas; Kulkarni, G. U. (Pergamon-Elsevier Science Ltd, 2014)

Graphene because of its inert and impermeable nature holds a great promise as a protective coating against corrosion and oxidation. It is envisioned that graphene coated metals will be increasingly used in metal and ...
All-Solution-Processed, Ambient Method for ITO-Free, Roll-Coated Tandem Polymer Solar Cells using Solution-Processed Metal Films

Angmo, Dechan; Dam, Henrik F.; Andersen, Thomas R.; Zawacka, Natalia K.; Madsen, Morten V.; Stubager, Jorgen; Livi, Francesco; Gupta, Ritu; Helgesen, Martin; Carle, Jon E.; Larsen-Olsen, Thue T.; Kulkarni, G. U.; Bundgaard, Eva; Krebs, Frederik C. (Wiley-V C H Verlag Gmbh, 2014)

A solution-processed silver film is employed in the processing of top-illuminated indium-tin-oxide (ITO)-free polymer solar cells in single-and double-junction (tandem) structures. The nontransparent silver film fully ...
Cellphone Camera Imaging of a Periodically Patterned Chip as a Potential Method for Point-of-Care Diagnostics

Gupta, Ritu; Reifenberger, Ronald G.; Kulkarni, G. U. (American Chemical Society, 2014)

In this study, we demonstrate that a disposable chip periodically patterned with, suitable ligands, an ordinary cellphone camera, and a simple pattern recognition software, can potentially be used for quantitative diagnostics. ...
Digital grayscale printing for patterned transparent conducting Ag electrodes and their applications in flexible electronics

Gupta, Ritu; Hosel, Markus; Jensen, Jacob; Krebs, Frederik C.; Kulkarni, G. U. (Royal Society of Chemistry, 2014)

Grayscale (halftone) laser printing is developed as a low-cost and solution processable fabrication method for ITO-free, semi-transparent and conducting Ag electrodes extendable over large area on a flexible substrate. The ...
Large area defrosting windows based on electrothermal heating of highly conducting and transmitting Ag wire mesh

Kiruthika, S.; Gupta, Ritu; Kulkarni, G. U. (Royal Society of Chemistry, 2014)

Highly interconnected crackles were obtained by spreading commercially available low cost crackle wall paint based precursor by the drop coating technique. An interconnected Ag mesh was fabricated by depositing metal over ...
Large area solution processed transparent conducting electrode based on highly interconnected Cu wire network

Kiruthika, S.; Gupta, Ritu; Rao, K. D. M.; Chakraborty, Swati; Padmavathy, Nagarajan; Kulkarni, G. U. (Royal Society of Chemistry, 2014)

Virtually unlimited and highly interconnected Cu wire networks have been fabricated on polyethylene terephthalate (PET) substrates with sheet resistance of <5 Omega square(-1) and transmittance of similar to 75%, as ...
Fabrication of Large Area, High-Performance, Transparent Conducting Electrodes Using a Spontaneously Formed Crackle Network as Template

Rao, K. D. M.; Gupta, Ritu; Kulkarni, G. U. (Wiley-Blackwell, 2014)
Worldwide outdoor round robin study of organic photovoltaic devices and modules

Madsen, Morten V.; Gevorgyan, Suren A.; Pacios, R.; Ajuria, J.; Etxebarria, I.; Kettle, Jeff; Bristow, Noel D.; Neophytou, Marios; Choulis, Stelios A.; Roman, Lucimara Stolz; Yohannes, Teketel; Cester, Andrea; Cheng, Pei; Zhan, Xiaowei; Wu, Jiang; Xie, Zhiyuan; Tu, Wei-Chen; He, Jr-Hau; Fell, Christopher J.; Anderson, Kenrick; Hermenau, Martin; Bartesaghi, Davide; Koster, L. Jan Anton; Machui, Florian; Gonzalez-Valls, Irene; Lira-Cantu, Monica; Khlyabich, Petr P.; Thompson, Barry C.; Gupta, Ritu; Shanmugam, Kiruthika; Kulkarni, G. U.; Galagan, Yulia; Urbina, Antonio; Abad, Jose; Roesch, Roland; Hoppe, Harald; Morvillo, P.; Bobeico, E.; Panaitescu, Eugen; Menon, Latika; Luo, Qun; Wu, Zhenwu; Ma, Changqi; Hambarian, Artak; Melikyan, Varuzhan; Hambsch, M.; Burn, Paul L.; Meredith, Paul; Rath, Thomas; Dunst, Sebastian; Trimmel, Gregor; Bardizza, Giorgio; Muellejans, Harald; Goryachev, A. E.; Misra, Ravi K.; Katz, Eugene A.; Takagi, Katsuhiko; Magaino, Shinichi; Saito, Hidenori; Aoki, Daisuke; Sommeling, Paul M.; Kroon, Jan M.; Vangerven, Tim; Manca, Jean; Kesters, Jurgen; Maes, Wouter; Bobkova, Olga D.; Trukhanov, Vasily A.; Paraschuk, Dmitry Yu.; Castro, Fernando A.; Blakesley, James; Tuladhar, Sachetan M.; Roehr, Jason Alexander; Nelson, Jenny; Xia, Jiangbin; Parlak, Elif Alturk; Tumay, Tulay Ash; Egelhaaf, Hans-Joachim; Tanenbaum, David M.; Ferguson, Gretta Mae; Carpenter, Robert; Chen, Hongzheng; Zimmermann, Birger; Hirsch, Lionel; Wantz, Guillaume; Sun, Ziqi; Singh, Pradeep; Bapat, Chaitnya; Offermans, Ton; Krebs, Frederik C. (Elsevier Science Bv, 2014)

Accurate characterization and reporting of organic photovoltaic (OPV) device performance reniains one of the important challenges in the field. The large spread among the efficiencies of devices with the same structure ...
Solution processed sun baked electrode material for flexible supercapacitors

Kurra, Narendra; Kiruthika, S.; Kulkarni, G. U. (Royal Society of Chemistry, 2014)

We report a new strategy for making electrode materials for supercapacitors based on a nanocrystalline Pd/carbon (nc-Pd/C) composite, obtained by thermolyzing a thin film of Pd hexadecylthiolate under sunlight. Thus obtained ...
Transparent and flexible capacitor fabricated using a metal wire network as a transparent conducting electrode

Gupta, Ritu; Rao, K. D. M.; Kulkarni, G. U. (Royal Society of Chemistry, 2014)

As transparency is becoming a desirable property even in non-optoelectronic devices, there is great impetus given to alternate materials and strategies replacing the conventional ITO. Here we have used transparent Au wire ...
A highly crystalline single Au wire network as a high temperature transparent heater

Rao, K. D. M.; Kulkarni, G. U. (Royal Society of Chemistry, 2014)

A transparent conductor which can generate high temperatures finds important applications in optoelectronics. In this article, a wire network made of Au on quartz is shown to serve as an effective high temperature transparent ...

Now showing items 41-60 of 214

Search DSpace

Advanced Search

Browse

All of DSpace
This Community
- By Issue Date
- Authors
- Titles
- Subjects

Recently added

Faculty Publications (CPMU): Recent submissions

Search DSpace

Browse

All of DSpace

This Community

My Account