01433nas a2200205   4500008004100000022001400041245012600055210006900181260011000250300001600360490000600376520058500382100001900967700002000986700002401006700002201030700002601052700002501078856012401103       2014                        eng d  a2046-206900aSurfactant free gram scale synthesis of mesoporous Ni(OH)(2)-r-GO nanocomposite for high rate pseudocapacitor application0 aSurfactant free gram scale synthesis of mesoporous NiOH2rGO nano  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG  a39875-398830 v43 a<p>We report a single-step surfactant-free gram scale hydrothermal synthesis of mesoporous Ni(OH)(2) nanoparticles and the Ni(OH)(2)-reduced graphene oxide (Ni(OH)(2)-r-GO) nanocomposite. Interesting morphological features are noted. These nanomaterials are examined and compared as cathode materials for pseudo-capacitor application through detailed characterizations. A high specific capacitance (C-s) of 1538 F g(-1) is observed for Ni(OH)(2)-r-GO even at a high current density of 40 A g(-1), whereas at the same current rate, bare Ni(OH)(2) shows C-s of only 936 F g(-1).</p>1 aSingh, Upendra1 aBanerjee, Abhik1 aMhamane, Dattakumar1 aSuryawanshi, Anil1 aUpadhyay, Kush, Kumar1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/surfactant-free-gram-scale-synthesis-mesoporous-nioh2-r-go-nanocomposite-high-rate-002341nas a2200193   4500008004100000022001400041245010800055210006900163260000800232300001200240490000600252520166800258100001601926700001901942700001801961700002001979700002501999856012302024       2014                        eng d  a2040-336400aZnO(N)-Spiro-MeOTAD hybrid photodiode: an efficient self-powered fast-response UV (visible) photosensor0 aZnONSpiroMeOTAD hybrid photodiode an efficient selfpowered fastr  cFEB  a503-5130 v63 a<p>Organic-inorganic hybrid photo-detectors with a self-sufficient mode of operation represent a research area of great current interest. In most efficient photodetectors and optoelectronic devices compound semiconductors containing toxic elements such as Cd, As, Te, S, Se etc. are used and these are also expensive. Hence there is also a rapidly growing interest in replacing these with environmentally friendly and earth-abundant materials. Herein, we report a facile solution-processed fabrication of a self-powered organic-inorganic hybrid photodetector using n-type oriented ZnO nanorods and p-type Spiro-MeOTAD semiconductor. ZnO is eco-friendly and earth-abundant, and Spiro-MeOTAD is nonhazardous. We show that the latter has far less toxicity than the toxic elements stated above. This visible blind UV photodetector shows high sensitivity (10(2)) and a UV/visible rejection ratio of 300. It also exhibits fast response times of tau(rise) similar to 200 mu s and tau(fall) similar to 950 mu s. Importantly, with a small modification of nitrogen incorporation in ZnO one can also realize a highly-sensitive self-powered visible light photodetector with at least 1000% (or higher) improvements in quality factors (photocurrent/sensitivity/response time) as compared to previously reported organic-inorganic hybrid photo-detectors based on metal-chalcogenides (CdS-PANI or CuInSe2-P3HT). Interestingly, the broadband sensitivity of such N:ZnO-Spiro-MeOTAD photodiode enables sensing of low intensity (similar to 28 mu W cm(-2)) ambient white light with a high photocurrent density of 120 nA cm(-2) making it an efficient ambient white light detector.</p>
1 aGame, Onkar1 aSingh, Upendra1 aKumari, Tanya1 aBanpurkar, Arun1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/znon-spiro-meotad-hybrid-photodiode-efficient-self-powered-fast-response-uv-visible