Interfacial engineering of CuO nanorod/ZnO nanowire hybrid nanostructure photoanode in dye-sensitized solar cell

Kılıç, Bayram; Türkdoğan, Sunay; Astam, Aykut; Baran, Sümeyra Seniha; Asgin, Mansur; Gür, Emre; Koçak, Yusuf

doi:10.1007/s11051-017-4103-4

Cited by 19 publications

(5 citation statements)

References 27 publications

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“…From quantum efficiency calculations, [41] as shown in Figure 6, it is clear that pristine ZnO exhibits feeble absorption over the visible region, pristine CuO and pristine ZnO/CuO heterostructure exhibit strong absorption over the visible region, whereas oxygen vacancy ZnO/CuO heterostructure exhibits strong absorption over the visible region and exhibits a feeble absorption over NIR region. [42,43] With the incorporation of defects (here V O ), there is a significant improvement in the performance in the visible region. Amrit et al investigated experimentally quantum efficiency calculations of ZnO/CuO heterojunction and attributed them to defect complexes in the heterostructure, the plot exhibits a sharp cutoff around 650 nm and an efficiency of about 65%.…”

Section: Resultsmentioning

confidence: 99%

“…[ 42 ] Kilic et al investigated ZnO/CuO heterojunction and pristine ZnO quantum efficiency calculations experimentally and observed the broad absorption over the visible region. [ 43 ] Even though pristine ZnO and pristine CuO are good candidates for photocatalysis and photovoltaics, the absorption is better in the visible region and weaker in the NIR region. However, the defect‐incorporated ZnO/CuO system is a good option for the NIR region photovoltaic activity.…”

Section: Resultsmentioning

confidence: 99%

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Interface Analysis of CuO/ZnO Heterojunction for Optoelectronic Applications: An Experimental and Simulation Study

Sumanth

Mishra

Rao

et al. 2023

Physica Status Solidi (a)

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Material interfaces are essential building blocks for a wide variety of emerging technologies. Particularly, well‐defined and optimized heterostructures serve as the foundation for developing materials for innovative optoelectronic applications. The distinctive features of heterojunctions has recently attracted the attention of the optoelectronics community, prompting a rise in the construction of modern devices. We present a solution‐based method for developing a heterojunction made of copper oxide nanorods coated with zinc oxide thin films. Coating ZnO thin films on vertically oriented CuO nanorods results in the development of a ZnO/CuO heterojunction configuration, which exhibits outstanding optoelectronic capabilities like broadband absorption, white light emission. Additionally, systematic ab‐initio computations have been done in order to comprehend the impact on various optical and electrical properties. It is observed that defects play a very crucial role in determining the quantum efficiency as well as improved visible to NIR absorption. Moreover, formation of energy levels near conduction bands in the presence of vacancies lead to broad absorption in the UV‐Visible region and therefore greater than 60% quantum efficiency over the range 390 nm to 800 nm is observed. Therefore, the presented work serves as the foundation for additional design and optimization techniques for oxide heterojunctions and emerging applications.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Interface Analysis of CuO/ZnO Heterojunction for Optoelectronic Applications: An Experimental and Simulation Study

Sumanth

Mishra

Rao

et al. 2023

Physica Status Solidi (a)

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“…[ 13 ] Nelsa et al studied the dye sensitized solar cell (DSSC) application of CuO/ZnO NCs synthesized by a simple solution‐based two‐step method. [ 14 ] Engineering CuO nanorod/ZnO nanowire hybrid nanostructure photoanode in DSSC was reported by Kilic et al [ 15 ] To fabricate ZnO/CuO NC, the hydrothermal method is used here because it is a cost‐effective and versatile process for the production of highly efficient NPs with high surface area.…”

Section: Introductionmentioning

confidence: 99%

Environmental Remediation of Real Textile Dyeing Wastewater Under Visible Light and Inactivation of Pathogenic Bacteria Using ZnO/CuO Nano‐Needles

Ramaraj

Mahalingam

Parimaladevi

et al. 2023

Physica Status Solidi (a)

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Textile industries have an immense existence in a country's economy. Large quantity of water is consumed by textile dyeing industries and produces volumes of wastewater. Treating these hazardous effluents to make them environmental friendly, using nanocatalysts is the best promising method. Metal oxide nanomaterials have emerged as an important tool for environmental remediation. Herein the hydrothermally synthesized ecofriendly and low‐cost zinc oxide/copper oxide nanocomposites (ZnO/CuO NCs) with different proportions of binary oxides are evaluated for the applications of degrading organic pollutants and antibacterial activity. The influence of doping is also studied in structural, optical, morphological, photocatalytic, and antibacterial activities. The presence of CuO in NCs affirms the formation of ZnO/CuO NCs. Photodegradation of Congo Red (CR) and real textile dyeing wastewater (TDW) under visible light irradiation by 0.5 M ZnO:0.5 M CuO NCs reveal them to act as a perfect catalyst by tuning doping concentration of Cu in ZnO, with 1.9 × 10−3 and 5.4 × 10−3 M min−1 rate constant. Hybrid nanocomposite materials exhibit high antibacterial activity against Staphylococcus aureus and Escherichia coli with 5 and 6 mm inhibition zone. The experimental characteristics of NCs are explained by a combination of electronic band structure due to size effect and tuning metal oxide proportions in comparison to that of pure metal oxide.

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“…Bununla birlikte, taban malzeme olarak kullanılan alttaşın tabaka direncinin numunenin tavlama ve büyütme sıcaklıklarından etkilenmemesi gerekir. DSSC'lerde taban malzeme ya da alttaş olarak saydam iletken oksit (TCO) materyallerden indiyum kalay oksit (ITO) ve flor katkılı kalay oksit F:SnO2 (FTO) yaygın olarak kullanılmaktadır [4]. DSSC üretiminde düşük dirence sahip olması, yüksek sıcaklıklara dayanıklı olmasından dolayı genelde FTO taban malzeme olarak kullanılmaktadır.…”

Section: Introductionunclassified

Investigation of Optoelectronic Properties by Synthesizing Hybrid Nano-semiconductors in New Generation Solar Cells

Kılıç

2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Toplumumuzdaki enerji gereksinimleri fosil yakıtları üzerine kurulmuştur fakat bu fosil yakıtlar hem sınırlıdır hem de fosil yakıtların yanmasıyla karbondioksit konsantrasyonunun hızlı artışı küresel ısınmaya ve iklim değişikliklerine neden olmaktadır. Bu koşullar altında alternatif ve temiz bir enerji kaynağı olarak fotovoltaik (PV) güneş hücrelerine ilgi artmaktadır. Son yıllarda silisyum güneş hücreleri ve ince film tabanlı güneş hücrelerinin kullanılması aktif olarak çalışılmaktadır. Fakat bu güneş hücreleri toplumların günümüzde kullandığı elektrik üretimi ile rekabet edemeyecek kadar pahalıdır. Güneş hücrelerinin maliyetinin azaltılması ve enerji dönüşümü veriminin artırılması için önemli fikirlerden biri de nano-yarıiletken tabanlı yeni nesil boya duyarlı güneş hücrelerinin (DSSC) üretilmesidir. Bu çalışmada, TiO2 yarıiletken üzerine CuO sentezlenerek hibrit malzeme oluşturulmuş ve DSSC hücrelerinde foto anot olarak kullanılmıştır. TiO2 yarıiletkeni hidrotermal yöntemle hazırlanmıştır. Hazırlanan TiO2 yarıiletkeni üzerine CuO hidrotermal metot ile sentezlenmiştir. DSSC'lerde boya olarak N719, karşıt elektrot olarak da platin kullanılmıştır. Yapısal ve optik karakterizasyon için Taramalı Elektron Mikroskobu (SEM), Enerji Dağılımlı X-Işını spektroskopisi (EDAX), X-Işını Kırınımı (XRD), UV-vis soğurma ve Fotolüminesans (PL) kullanılmış ve Akım yoğunluğu-voltaj (J-V) ölçümünden hücre verimleri hesaplanmıştır. SEM analizinden CuO/TiO2 nano-yarıiletkenin yüksek yüzey hacim oranında sentezlendiği ve yaklaşık 20-50 nm kristal boyutlarının olduğu belirlenmiştir. EDAX ölçümlerinden TiO2 yarıiletkeni üzerine sentezlenen CuO yarıiletkeninin varlığı net bir şekilde gösterilmiştir. XRD ölçümlerinden yüksek saflıkta kristalleşmelerin olduğu ve CuO/TiO2 nano-yarıiletkenin varlığı tespit edilmiştir. Güneş hücresi üretimi iki aşamada gerçekleştirilmiş ve ilk olarak saf TiO2 ile üretilen güneş hücrelerinde hücre verimi η= %4,99 olarak elde edilirken CuO/TiO2 ile elde edilen hücrenin verimi ise %6,14 olarak elde edilmiştir. DSSC'lerde TiO2 yarıiletkenine CuO katkılanmasıyla hücre veriminin %20 arttığı görülmüştür.

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Interfacial engineering of CuO nanorod/ZnO nanowire hybrid nanostructure photoanode in dye-sensitized solar cell

Cited by 19 publications

References 27 publications

Interface Analysis of CuO/ZnO Heterojunction for Optoelectronic Applications: An Experimental and Simulation Study

Interface Analysis of CuO/ZnO Heterojunction for Optoelectronic Applications: An Experimental and Simulation Study

Environmental Remediation of Real Textile Dyeing Wastewater Under Visible Light and Inactivation of Pathogenic Bacteria Using ZnO/CuO Nano‐Needles

Investigation of Optoelectronic Properties by Synthesizing Hybrid Nano-semiconductors in New Generation Solar Cells

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