Yazar "Çırpan, Ali" için listeleme
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Analysis of temperature-dependent forward and leakage conduction mechanisms in organic thin film heterojunction diode with fluorine-based PCBM blend
Yıldız, Dilber Esra; Güllü, Hasan Hüseyin; Toppare, Levent; Çırpan, Ali (Springer, 2020)The forward and reversed biased current-voltage behaviors of the organic diode were detailed in a wide range of temperatures. In this diode, a donor-acceptor-conjugated copolymer system was constructed with poly((9,9-dio ... -
Benzodithiophene and benzotriazole bearing conjugated polymers for electrochromic and organic solar cell applications
Akbaşoğlu Ünlü, Naime; Hacıoğlu, Şerife O.; Hizalan, Gönül; Yıldız, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (Electrochemical Society Inc., 2017)Herein, alternating donor-acceptor type benzodithiophene and benzotriazole bearing copolymers were synthesized and thieno[3,2-b]thiophene and furan units were incorporated as ?-bridges. The application of these polymers ... -
Benzotriazole and benzodithiophene containing medium band gap polymer for bulk heterojunction polymer solar cell applications
Ünay, Hande; Akbaşoğlu Ünlü, Naime; Hizalan, Gönül; Özdemir Hacıoğlu, Şerife; Yıldız, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (John Wiley and Sons Inc., 2014)An alternating donor‐acceptor copolymer based on a benzotriazole and benzodithiophene was synthesized and selenophene was incorporated as π‐bridge. The photovoltaic and optical properties of polymer were studied. The ... -
Benzotriazole and benzothiadiazole containing conjugated copolymers for organic solar cell applications
Karakuş, Melike; Apaydın, Doğukan Hazar; Yıldız, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (Elsevier Ltd, 2012)2-Dodecyl benzotriazole (BTz) and benzothiadiazole (BTd) containing copolymers poly(4-(2-dodecyl-2H-benzo[d][1,2,3]triazol-4-yl)benzo[c][1,2,5] thiadiazole (P1), poly(4-(5-(2-dodecyl-7-(thiophen-2yl)-2H-benzo[d][1,2,3] ... -
Dielectric and electrical properties of an organic device containing benzotriazole and fluorene bearing copolymer
Dielectric and electrical properties of a benzotriazole and fluorene copolymer were investigated using current-voltage (I-V), capacitance-voltage (C-V), and conductance-voltage (G/w-V) measurements at room temperature. The ... -
Effect of layer thickness on the electrical parameters and conduction mechanisms of conjugated polymer-based heterojunction diode
Yıldız, Dilber Esra; Apaydın, Doğukan Hazar; Toppare, Levent Kamil; Çırpan, Ali (John Wiley and Sons Inc., 2017)In this study, thickness-dependent current density–voltage (J–V) characteristics obtained for poly{(9,9-dioctylfluorene)?2,7-diyl-(4,7-bis(thien-2-yl) 2-dodecyl-benzo[1,2,3] triazole)} (PFTBT) conjugated copolymer based ... -
Electrical characteristics of organic heterojunction with an alternating benzotriazole and fluorene containing copolymer
Güllü, Hasan Hüseyin; Yıldız, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (Springer, 2020)The current-voltage (I - V) and capacitance-voltage (C - V) characteristics of the organic heterojunction diode were investigated in a wide temperature range from 80 to 320 K and frequency range from 10 kHz to 1 MHz, ... -
Leakage current by Frenkel-Poole emission on benzotriazole and benzothiadiazole based organic devices
Yıldız, Dilber Esra; Karakuş, Melike; Toppare, Levent Kamil; Çırpan, Ali (Elsevier Ltd, 2014)In this study three different organic semiconductors were used in the fabrication of ITO/PEDOT:PSS/Polymer:PCBM/LiF/Al configuration. Reverse current density-voltage (Jr-V) measurements of the samples were investigated to ... -
The main electrical and interfacial properties of benzotriazole and fluorene based organic devices
Electrical and interfacial properties of ITO/PEDOT:PSS/poly((9,9-dioctylfluorene)-2,7-diyl(2-dodecyl-benzo[1,2,3]triazole)) (PFTBT)/Au devices were investigated using current-voltage (I-V), capacitance-voltage (C-V) and ... -
Optimizing the organic solar cell efficiency: Role of the active layer thickness
A 2-dodecyl benzotriazole and 9,9-dioctylfluorene containing alternating conjugated polymer, poly((9,9-dioctylfluorene)-2,7-diyl-(4,7-bis(thien-2-yl) 2-dodecyl-benzo[1,2,3]triazole)) (PFTBT), was blended with PCBM (1:1, ... -
Silafluorene-based polymers for electrochromic and polymer solar cell applications
Erlik, Ozan; Akbaşoğlu Ünlü, Naime; Hizalan, Gönül; Özdemir Hacıoğlu, Şerife; Çömez, Seda; Yıldız, Dilber Esra; Toppare, Levent Kamil; Çırpan, Ali (John Wiley and Sons Inc., 2015)In this study, four novel silafluorene (SiF) and benzotriazole (Btz) bearing conjugated polymers are synthesized. In the context of electrochemical and optical studies, these polymers are promising materials both for ... -
Solution processable benzotriazole and fluorene containing copolymers for photovoltaic applications
2-Dodecyl benzotriazole and 9,9-dioctylfluorene containing alternating copolymers poly((9,9-dioctylfluorene)-2,7-diyl-(2-dodecyl-benzo[1,2,3]triazole)) (P1), poly((9,9-dioctylfluorene)-2,7-diyl-(4,7-bis(thien-2-yl) ... -
Synthesis of a benzotriazole bearing alternating copolymer for organic photovoltaic applications
İstanbulluoğlu, Çağla; Göker, Seza; Hizalan, Gönül; Özdemir Hacıoğlu, Şerife; Arslan Udum, Yasemin; Yıldız, Dilber Esra; Çırpan, Ali; Toppare, Levent Kamil (Royal Society of Chemistry, 2015)A low band gap donor–acceptor (D–A) copolymer PTBTBDT, namely, poly(2-dodecyl-4,7-di(thiophen-2-yl)-2H-benzo[d][1,2,3]triazole-alt-4,8-bis(2-ethylhexyloxy)benzo[1,2-b:4,5-b′]dithiophene), was designed and synthesized via ... -
A triazoloquinoxaline and benzodithiophene bearing low band gap copolymer for electrochromic and organic photovoltaic applications
Özdemir Hacıoğlu, Şerife; Akbaşoğlu Ünlü, Naime; Aktaş, Ece; Hizalan, Gönül; Yıldız, Dilber Esra; Çırpan, Ali; Toppare, Levent Kamil (Elsevier Ltd, 2017)A new triazoloquinoxaline and benzodithiophene based copolymer was synthesized to investigate its electrochemical, optical and photovoltaic behaviors. According to the polymer design, combination of two acceptor units ...
