The effects of 1, 2, 3, 4, and 5wt% of TiO2 disperse nanofiller on mechanical properties of polyamide hexaglycol (PAHG) were investigated. Specimen was prepared by the hot vibration dispersion technique to make a PMNC. Hardness, tensile strength, ultimate tensile strength, young modulus, and impact at room temperature were tested. It has been found that enhancement in these properties starts at extra low weight percent (1wt%) nTiO 2 . The maximum effect of nano TiO 2 addition was on tensile strength, and the lowest was on young modulus.

Abstract:We designed and fabricated high efficiency solid state dye sensitized solar cells based on vertical ZnO nanowire arrays by utilizing a mixture paste of LiI, PMII and solid iodine as electrolyte. Poly thiophene -single wall carbon nanotube (PT-SWNT) composites were synthesized on FTO glass by in situ polymerization and employed as counter electrode to replace the conventionally used expensive Pt electrode. The initial results showed the power conversion efficiency of 2.87 % from the device with PPy-SWNT composite coated on FTO glass as counter electrode.

We developed an organic-inorganic solar cell configuration based on nanocomposite Polyaniline-Multi Walled Carbon Nanotubes /gold particles/ Si, and the PV performance was compared between in presence or absence of plasmonics phenomena by deposing gold nanoparticles on n-type Si and deposited PANI-MWNTs layer on the top of n-type Si substrate. The gold particles deposited by atomic layer deposition on the top of n-Si, significantly increase the voltage and fill factor relative to devices without gold particles. The efficiency and fill factor of the solar cell with gold particles are (0.28%, 0.311) higher than solar cell without using plasmonics phenomena (0.073, 0.275). ‫ﻟ‬ ‫ﺑﻼزﻣﯿﺎ‬ ‫اﻻداء‬ ‫ﺗﺤﺴﯿﻦ‬ ‫اﻟﺸﻤﺴﯿﺔ‬ ‫ﻠﺨﻠﯿﺔ‬‫اﻟﺨﻼﺻﺔ‬ ‫)ﻋﺿوﯾﺔ‬ ‫اﻟﺷﻣﺳﯾﺔ‬ ‫اﻟﺧﻠﯾﺔ‬ ‫ﺗطوﯾر‬ ‫ﺗم‬ -‫اﻟﻧﺎﻧوﯾﺔ/‬ ‫اﻟﻛﺎﺑون‬ ‫ﻟﻧﺎﺑﯾب‬ ‫اﻧﯾﻠﯾن‬ ‫ﺑوﻟﻲ‬ ‫اﻟﺛﺎﻧوي‬ ‫اﻟﻣرﻛب‬ ‫ﺑﺎﺳﺗﺧدام‬ ‫ﻻﻋﺿوﯾﺔ(‬ ) ‫ﻓﻌﺎﻟﯾﺔ‬ ‫ﺳﯾﻛﻠون.‬ / ‫اﻟذھب‬ ‫ﺟﺳﯾﻣﺎت‬ pv ) ‫ظﺎھرة‬ ‫وﺟود‬ ‫وﻋدم‬ ‫ﺑوﺟود‬ ‫دراﺳﺗﮭﺎ‬ ‫ﺗم‬ ( plasmonics ‫ﺟﺳﯾﻣﺎت‬ ‫ﺗرﺳﯾب‬ .( ‫ﻟﻠذھ‬ ‫اﻟﻧﺎﻧوﯾﺔ‬ ‫ﻧوع‬ ‫ﺳﻠﯾﻛون‬ ‫ﻋﻠﻰ‬ ‫ب‬ n-type ‫و‬ ) ‫ﺗرﺳﯾب‬ PANI-MWCNTs ) ‫ﻧوع‬ ‫اﻟﺳﯾﻠﻛون‬ ‫ﻓوق‬ ( n-type ‫ﺗرﺳﯾب‬ .( ) ‫ﺳﯾﻠﻛون‬ ‫ﻓوق‬ ‫اﻟذھب‬ ‫ﺟﺳﯾﻣﺎت‬ n-type ‫ﻛﻔﺎءه‬ ‫وﺟوددھﺎ.‬ ‫ﺑﻌدم‬ ‫ﻣﻘﺎرﻧﺔ‬ ‫اﻟﺷﻐل‬ ‫وﻋﺎﻣل‬ ‫اﻟﻔﻠوﺗﯾﺔ‬ ‫ﻗﯾﻣﺔ‬ ‫ﻟزﯾﺎدة‬ ‫ادى‬ ( ) ‫ظﺎھره‬ ‫ﺑوﺟود‬ ‫اﻟذھب‬ ‫ﺟﺳﯾﻣﺎت‬ ‫ﺑوﺟود‬ ‫اﻟﺷﻣﺳﯾﺔ‬ ‫اﻟﺧﻠﯾﺔ‬ plasmonics ) ‫ﺑﻧﺳﺑﺔ‬ ‫ازدات‬ ( 0.28 -0.311

A combination of bulk heterojunction and ZnO nanowires (NWs) for solar cell application has been investigated. The bulk heterojunction materials include poly (3-hexylthiophene) :( 6, 6)-phenyl C 60 butyric acid methyl ester (P3HT: PCBM). The effects of nanowire length, coating processes, and surface modification of ZnO NWs by tetra (4-carboxyphenyle) [TCPP] on the optical properties and solar cell performance are studied. It is found that the short NWs and slow coating speed of P3HT: PCBM on ZnO NW arrays resulted in better performance of solar cells, which is attributed to a longer time self-organization of the polymer chain, effective infiltration into the gaps among ZnO NWs. In addition, the surface modification by porphyrin is found to increase the solar cell efficiency from 2.18 to 3.13% due to the improved optical absorption and charge transfer at the NW/P3HT:PCBM interfaces.

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