Search Results - "Tegegne, Newayemedhin A"

Aggregation and thermally induced photo-physics and structural ordering of thiophene-quinoxaline copolymer by Tegegne, Newayemedhin A

“…Abstract Aggregation and thermally induced photo-physics of a low band gap thiophene-quinoxaline copolymer (TQ1) was investigated. The S0 ⟶ S1 transition of…”
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Photophysical, Thermal and Structural Properties of Thiophene and Benzodithiophene-Based Copolymers Synthesized by Direct Arylation Polycondensation Method by Tegegne, Newayemedhin A, Abdissa, Zelalem, Mammo, Wendimagegn

“…Three low-band-gap copolymers based on isoindigo acceptor units were designed and successfully synthesized by direct arylation polycondensation method. Two of…”
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Effect of Alkyl Side Chain Length on Intra- and Intermolecular Interactions of Terthiophene–Isoindigo Copolymers by Tegegne, Newayemedhin A, Abdissa, Zelalem, Mammo, Wendimagegn, Uchiyama, Takayuki, Okada-Shudo, Yoshiko, Galeotti, Francesco, Porzio, William, Andersson, Mats R, Schlettwein, Derck, Vohra, Varun, Schwoerer, Heinrich

“…Two terthiophene–isoindigo copolymers (P3TI-O and P3TI-D) were successfully designed and synthesized. Octyl (O) and dodecyl (D) alkyl side chains were appended…”
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Photostability of benzodithiophene based polymer: effect of PC60BM and intermolecular interactions by Bekri, Nika, Asmare, Eninges, Mammo, Wendimagegn, Tegegne, Newayemedhin A

“…Organic solar cells working under continuous light irradiation are prone to photo-induced degradation. Photostabilities of…”
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Copper and nickel co-doping effects on the structural, optical and electrical properties of tungsten trioxide nanoparticles prepared by co-precipitation technique by Lachore, Wegene Lema, Hone, Fekadu Gashaw, Andoshe, Dinsefa Mensur, Tegegne, Newayemedhin A, Mekonnen, Mulualem Abebe

“…Abstract The pristine WO 3 (tungsten trioxide) and Cu/Ni Co-doped WO 3 nanoparticles were synthesized by the co-precipitation synthesis methods with fixed wt.%…”
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Boosting photocatalytic activity of β-PbO nanoparticles through metal doping by Geldasa, Fikadu Takele, Kebede, Mesfin Abayneh, Shura, Megersa Wodajo, Feyisa, Gebisa Bekele, Tegegne, Newayemedhin A, Hone, Fekadu Gashaw

“…Abstract The current work focuses on the fabrication of pristine and metals (Co, Cu, Ni, Li, and Sn) doped β -PbO phase nanoparticles by cost-effective…”
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Enhancing the Performance of Wide-Bandgap Polymer-Based Organic Solar Cells through Silver Nanorod Integration by Waketola, Alemayehu G., Hone, Fekadu G., Geldasa, Fikadu T., Genene, Zewdneh, Mammo, Wendimagegn, Tegegne, Newayemedhin A.

“…Light trapping induced by the introduction of metallic nanoparticles has been shown to improve photo absorption in organic solar cells (OSCs). Researchers in…”
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Optimization of preparation parameters of ceramic pot water filters for potential application of microbial and fluoride removal from groundwater by Solomon, Alemayehu, Andoshe, Dinsefa Mensur, Abebe, Adane Muche, Terfasa, Tatek Temesgen, Ganesh, T., Hone, Fekadu Gashaw, Tegegne, Newayemedhin A., Tesfamariam, Belay Brehane

“…The need to make clean water accessible and affordable for low-income countries is crucial. This study examines the suitability of various clays for Ceramic…”
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Photophysics and thermally-induced degradation of P2TI-DD, a polymer synthesized by direct arylation reaction by Bekri, Nika, Asmare, Eninges, Abdissa, Zelalem, Mammo, Wendimagegn, Tegegne, Newayemedhin A.

“…A low band gap ( E g = 1.6 eV ) copolymer, P2TI-DD , with bithiophene donor and 2-decyldodecyl (DD)-substituted isoindigo acceptor was successfully prepared…”
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Hybrid silver/silver-oxide nanoparticles doped hole transport layer for efficient photon harvesting in organic solar cells by Waketola, Alemayehu G., Hone, Fekadu G., Mola, Genene T., Oseni, Saheed O., Ogutu, Hezron, Tegegne, Newayemedhin A.

“…Plasmonic nanoparticles (NPs) are employed in this investigation to assist in the enhancement of photon harvest in organic solar cells (OSCs). OSCs based on…”
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Facile synthesis of different metals doped α-PbO nanoparticles for photocatalytic degradation of Methylene Blue dye by Geldasa, Fikadu Takele, Kebede, Mesfin Abayneh, Shura, Megersa Wodajo, Andoshe, Dinsefa Mensur, Tegegne, Newayemedhin A, Hone, Fekadu Gashaw

“…Abstract In recent days, metallic oxide semiconductor nanoparticles have drawn attention to the photocatalytic degradation of organic pollutants. In the…”
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Tin-doped ZnO electron transport layer to improve performance of P3HT-based organic solar cells by Alebachew, Biruk, Waketola, Alemayehu G., Goosen, Neill J., Desissa, Temesgen D., Tegegne, Newayemedhin A.

“…Zinc oxide (ZnO) electron transport layer (ETL) has been employed in inverted OSCs for highly efficient and stable devices. In this study, a Sn-doped ZnO layer…”
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Embedding plasmonic gold nanoparticles in a ZnO layer enhanced the performance of inverted organic solar cells based on an indacenodithieno[3,2- b ]thiophene- alt -5,5'-di(thiophen-2-yl)-2,2'-bithiazole-based push-pull polymer by Waketola, Alemayehu G, Pfukwa, Cathrine, Neethling, Pieter, Bosman, Gurthwin, Genene, Zewdneh, Wang, Ergang, Mammo, Wendimagegn, Hone, Fekadu G, Tegegne, Newayemedhin A

“…Recently, plasmonic nanoparticles (NPs) have attracted considerable attention as good candidates for enhancing the power conversion efficiency (PCE) of organic…”
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Ultrafast excited state dynamics of a bithiophene‐isoindigo copolymer obtained by direct arylation polycondensation and its application in indium tin oxide‐free solar cells by Tegegne, Newayemedhin A., Abdissa, Zelalem, Mammo, Wendimagegn, Andersson, Mats R., Schlettwein, Derck, Schwoerer, Heinrich

“…ABSTRACT A low band gap copolymer, P2TI (Eg = 1.6.eV), with bithiophene as donor and isoindigo as acceptor units is designed and synthesized by the direct…”
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Light-induced degradation of a push–pull copolymer for ITO-free organic solar cell application by Tegegne, Newayemedhin A., Wendimu, Hailemariam, Abdissa, Zelalem, Mammo, Wendimagegn, Andersson, Mats R., Hone, Fekadu Gashaw, Andoshee, Dinsefa M., Olaoye, Olufemi, Bosman, Gurthwin

“…A push–pull copolymer- P1 was successfully designed and synthesized by coupling ter -thiophene donor (D) and isoindigo acceptor (A) units by a direct arylation…”
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Tailoring intra-molecular coupling in BDT-based copolymers to enhance their performance in fullerene-free organic solar cells by Tegegne, Newayemedhin A, Negash, Asfaw, Yilma, Desalegn, Gebremariam, Kidan G, Genene, Zewdneh, Mammo, Wendimagegn, Goosen, Neill J

“…Three copolymers based on a 4,8-bis(4,5-dioctylthiophen-2-yl)benzo[1,2- b :4,5- b ′]dithiophene (BDTT) donor unit coupled with 6-(2-ethylhexyl)-5 H…”
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Recent progress in hybrid conducting polymers and metal oxide nanocomposite for room-temperature gas sensor applications: A review by Zegebreal, Lemma Tirfie, Tegegne, Newayemedhin A., Hone, Fekadu Gashaw

“…The rapid development of conducting polymers has demonstrated great potential for chemical gas detection at room temperature. Their electrical conductivity can…”
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Recent Progress in Silver and Gold Nanoparticle-Based Plasmonic Organic Solar Cells by Waketola, Alemayehu G., Tegegne, Newayemedhin A., Hone, Fekadu G.

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The roles of acceptors in the thermal-degradation of P3HT based organic solar cells by Mohammed, Yissa A., Hone, Fikadu G., Mola, Genene T., Tegegne, Newayemedhin A.

“…The effects of acceptors on thermal degradation of thin film organic solar cells (OSCs) were investigated under the controlled environment. The popular donor…”
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Conformation-Dictated Aggregation Photophysics in Isoindigo-Based Copolymers by Asmare, Eninges, Bekri, Nika, Nchinda, Leonato Tambua, Hone, Fekadu G., Mammo, Wendimagegn, Krüger, Tjaart P. J., Tegegne, Newayemedhin A.

“…The aggregation of polymer chains directly influences the morphology of thin films used in optoelectronic devices. Therefore, understanding the relationship…”
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