Architectural design of new conjugated systems carrying donor-π-acceptor groups (carbazole-CF3): Characterizations, optical, photophysical properties and DSSC's applications

Derince, Betul; Görgün, Kamuran; Çağlar, Yasemin; Çağlar, Müjdat

doi:10.1016/j.molstruc.2021.131689

Cited by 4 publications

(7 citation statements)

References 61 publications

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“…In addition, it is seen in the literature that compounds with at least one carbazole derivative attached to the benzene ring and at least one electron-withdrawing group in the ortho position are more easily conjugated with the substituents on the benzene ring (Chang 2010) (Kremser et al, 2008). Therefore, within this scope mentioned above, the presence of fluorine groups in the ortho and para positions is thought to play an important role in the observed efficiency value in the present compared to the previous study (Siodla et al, 2014;Kremser et al, 2008;Derince, Gorgun, Caglar & Caglar, 2022).…”

Section: Introductionmentioning

confidence: 48%

“…In addition, the presence of alkyl groups of this compound, the peaks at 4.24 ppm (t, 2H), 1.82 ppm (m, 2H), 1.20-1.30 ppm (m, 10H), 0.85 ppm (t, 3H) are assigned to be octyl-protons, as aliphatic protons. Synthesis and characterization of molecules C1 and C2 have been reported previously (Derince, Gorgun, Caglar & Caglar, 2022). The 13 C NMR spectrum of the synthesized 3,6-bis(2,4difluorophenyl)-9-octyl-9H-carbazole (C3) compound given in Figure 1.…”

Section: Resultsmentioning

confidence: 99%

“…The reaction mixture was cooled to 0 °C, then stirred for 2h and poured into pure water. After the filtration of the crude product, the solid recrystallized from ethanol to afford 3,6-dibromo-9H-carbazole as pale yellow crystals (Derince, Gorgun, Caglar & Caglar, 2022).…”

Section: Synthesis Of 36-dibromo-9h-carbazole (C1)mentioning

confidence: 99%

“…The reaction mixture was washed with diethyl ether and water. The white product was purified with column chromatography using nhexane (Derince, Gorgun, Caglar & Caglar, 2022).…”

Section: Synthesis Of 36-dibromo-9-octyl-9h-carbazole (C2)mentioning

confidence: 99%

“…The data of the C1 and C2 molecules that we synthesized and characterized, is given in our previous article (Derince, Gorgun, Caglar & Caglar, 2022).…”

Section: Synthesis Of 36-dibromo-9-octyl-9h-carbazole (C2)mentioning

confidence: 99%

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Karbazol Temelli (D–π–A) Duyarlaştırıcı: Sentezi, Karakterizasyonu ve DSSC Uygulaması

YANDIMOĞLU

Görgün

2022

EJOSAT

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Bu çalışmada, elektron donörü olarak karbazol çekirdeği, π-konjuge köprü olarak fenil birimleri ve elektron alıcısı olarak flor gruplarını içeren yeni bir organik karbazol bazlı donör-π-alıcı (D–π–A) duyarlaştırıcı bileşik C3 sentezlenmiş olup, ZnO bazlı boya duyarlı güneş pillerinde (DSSC'ler) boya olarak kullanılmıştır. 3,6-di(2,4-diflorofenil)-N-oktil karbazol (C3), ilk olarak halojenasyon ve alkilasyon reaksiyonu ve ikinci olarak Suzuki-Miyaura çapraz kenetlenme reaksiyonu ile iyi verimlerle sentezlenmiştir. Sentezlenen C3 duyarlaştırıcı, IR, 1H NMR ve 13C NMR ile karakterize edilmiştir. Ayrıca bu bileşiğin optik (UV-Vis ve floresans) ve termogravimetrik özellikleri de incelenmiştir. Hidrotermal yöntemlerle sentezlenen ZnO nanotozlarının kristal yapısı X-ışını kırınım spektrokopi (XRD) yöntemiyle incelendi ve hekzagonal wurtzite yapıya sahip oldukları belirlendi. Taramalı electron mikrokobu (SEM) görüntüleri ZnO nanotozlarının oldukça yoğun ve düngün yapraksı bir yapıya sahip olduklarını göstermiştir. C3 ve N719 kullanılarak ZnO tabanlı DSSC cihazlarının fabrikasyonu yapılmıştır. Metal içermeyen organik (C3), rutenyum (N719) ve karışım duyarlaştırıcılarının (C3-N719) güç dönüşüm verimleri (PCE) ve açık devre fotovoltajları (Voc) sırasıyla %0,006-0,28, %0.461-0.44 ve %0.893-0.53 olarak ölçülmüştür. N719 bazlı DSSC'lerin C3 ile artan verimi nedeniyle, C3'ün boya kümeleşmesini azalttığı ve böylece yardımcı duyarlaştırıcı olarak kullanılabileceği belirlenmiştir.

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Section: Introductionmentioning

confidence: 48%

Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of 36-dibromo-9h-carbazole (C1)mentioning

confidence: 99%

“…The reaction mixture was washed with diethyl ether and water. The white product was purified with column chromatography using nhexane (Derince, Gorgun, Caglar & Caglar, 2022).…”

Section: Synthesis Of 36-dibromo-9-octyl-9h-carbazole (C2)mentioning

confidence: 99%

“…The data of the C1 and C2 molecules that we synthesized and characterized, is given in our previous article (Derince, Gorgun, Caglar & Caglar, 2022).…”

Section: Synthesis Of 36-dibromo-9-octyl-9h-carbazole (C2)mentioning

confidence: 99%

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Karbazol Temelli (D–π–A) Duyarlaştırıcı: Sentezi, Karakterizasyonu ve DSSC Uygulaması

YANDIMOĞLU

Görgün

2022

EJOSAT

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Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

et al. 2023

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In this work, we synthesized trifluoromethyl group series modified triphenylamine dibenzofulvenes, named as CC-1–3, as a hole transporting interfacial layer to obtain well-matched energy levels and long-term stability features in NiOx-based inverted perovskite solar cells. The optical and thermal properties of these new compounds were investigated. All the compounds were combined with NiOx and formed layer by layer as hole transporting layers (HTLs). The morphology, energy level, and charge transfer resistance were all compared. The NiOx/CC-3 bilayer-based architecture improved the energy level alignment, film morphology, crystallinity, and hole transportation, allowing for a high-quality perovskite layer and interfacial contact behavior. As a result, this inverted cell significantly improved open-circuit voltage (V OC), short current density (J SC), fill factor (FF), and power conversion efficiency (PCE) values up to 21.66 mA cm–2, 1.105 V, 79.33%, and 19.82%, respectively. Remarkably, the NiOx/CC-3 device had negligible hysteresis and long-term stability, retaining over 90% of its original efficiencies under argon and over 80% in the ambient atmosphere after 40 days. This paper shows a new chemical design, particularly for the trifluoromethyl group effect, and a complete understanding of the bilayer HTL technique and its promise for producing efficient cell performance.

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Novel A-π-D-A organic dyes for better photovoltaic performance

Roys,

Manju,

Siddiq

et al. 2024

RSC Adv.

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Architectural design of new conjugated systems carrying donor-π-acceptor groups (carbazole-CF3): Characterizations, optical, photophysical properties and DSSC's applications

Cited by 4 publications

References 61 publications

Karbazol Temelli (D–π–A) Duyarlaştırıcı: Sentezi, Karakterizasyonu ve DSSC Uygulaması

Karbazol Temelli (D–π–A) Duyarlaştırıcı: Sentezi, Karakterizasyonu ve DSSC Uygulaması

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

Novel A-π-D-A organic dyes for better photovoltaic performance

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