Performance and stability analysis of curcumin dye as a photo sensitizer used in nanostructured ZnO based DSSC

Sinha, Debabrata; De, D.; Ayaz, A.

doi:10.1016/j.saa.2017.12.058

Cited by 55 publications

(19 citation statements)

References 30 publications

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“…These data show a decrease in the bandgap energy of the TiO2 material after combining with both curcumin and curcumin complex compounds. The Egap of TiO2/curcumin (2.82 eV) was within the range of previously reported values [9,20,21]. The TiO2/Mg 2+ -curcumin material shows tremendous bandgap energy than TiO2/curcumin, although it is still slightly smaller than TiO2 itself.…”

Section: Bandgap Energy Of Tio2/m-curcumin (M= Na + Mg 2+ Cu 2+ )supporting

confidence: 86%

“…Curcumin deposited on TiO2 surface [8] or ZnO [9] tested for photosensitizers has been reported to widen the photon energy absorption range towards visible light compared to the metal oxides, which are photosensitive under UV light. Bandgap energy of curcumin-only was observed at about 2.30 eV [9,10], while the electronic transition absorption of the molecule in solution is in the range of 300 -600 nm, where the maximum wavelength is solvent dependent [5,11]. The mixture of curcumin with copper oxide shows lower bandgap energy than curcumin-only from 2.30 eV (curcumin) to 2.27-2.16 eV getting smaller with increasing CuO concentration [10].…”

Section: Figure 1 Keto-enol Tautomerism Of Curcuminmentioning

confidence: 99%

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Bandgap Energy of TiO2/M-Curcumin Material (M = Na+, Mg2+, Cu2+)

et al. 2022

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Bandgap energy (Egap) of TiO2/curcumin as well as TiO2/M-curcumin (M = Na+, Mg2+, Cu2+) was determined. The material was prepared on transparent conductive oxide as TiO2 film. Then, the curcumin and curcumin derivatives were adsorbed on TiO2 surface by immersing the film in solution of the compounds. The diffuse reflectance UV-Vis spectra of the materials were recorded and utilized to calculate the Egap using the Tauc plot method. The calculation gave the Egap of TiO2 of 3.27 eV that lowers after being deposited with curcumin and metal-curcumin compounds. The Egap of TiO2/curcumin was 2.82 eV, while TiO2/Na+-curcumin, TiO2/Mg2+-curcumin, and TiO2/Cu2+-curcumin were 2.36, 3.11, and 2.15 eV, respectively. Curcumin metal complexes, i.e., TiO2/Cu2+-curcumin, showed high molar absorptivity and effectively deposited on the TiO2 lowers the bandgap energy of TiO2 compared to free-curcumin on TiO2.

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Section: Bandgap Energy Of Tio2/m-curcumin (M= Na + Mg 2+ Cu 2+ )supporting

confidence: 86%

Section: Figure 1 Keto-enol Tautomerism Of Curcuminmentioning

confidence: 99%

Bandgap Energy of TiO2/M-Curcumin Material (M = Na+, Mg2+, Cu2+)

et al. 2022

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“…Sampel Cu 2+kurkumin ditempatkan pada set holder. Sampel dianalisis pada bilangan gelombang 4000-400 cm −1 [13].…”

Section: Karakterisasiunclassified

Kajian Fotostabilitas Senyawa Kurkumin dengan Penambahan Ion Logam Cu2+ Pada Irradiasi Sinar UV

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Kurniawan

Nugraha

et al. 2020

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Senyawa kurkumin telah dimanfaatkan dalam berbagai bidang, salah satunya dibidang fotovoltaik sebagai pemanen energi matahari yang akan dikonversi menjadi energi listrik. Keterbatasan dari senyawa ini adalah tidak stabil terhadap cahaya matahari karena adanya gugus keton dan gugus hidroksil. Kedua elektron bebas pada gugus ini dapat berinteraksi dengan logam membentuk senyawa kompleks. Pada penelitian ini, pengaruh ion logam Cu2+ terhadap sistem kristal dan stabilitas dikaji. Kurkumin yang digunakan dalam penelitian ini adalah kurkumin komersial yang telah dipurifikasi. Kurkumin dalam pelarut methanol dilarutkan bersama CuSO4 dengan perbandingan mol 1:2. Setelah campuran di refluks kemudian diperoleh endapan dengan warna kuning tua. Endapan yang telah dikeringkan kemudian dikarakterisasi menggunakan spektrofotometer XRD, FT-IR, dan UV-Vis. Tidak banyak perubahan yang teramati pada pola difraksi sinar-X, IR maupun UV-Vis. Sedikit pergeseran teramati mengindikasikan interaksi antara kurkumin dengan Cu2+. Pengujian fotostabilitas dilakukan dengan melarutkan senyawa kurkumin dan Cu2+-kurkumin dalam dimetilsulfoksida (DMSO) dimasukan dalam ruang dengan sumber lampu UV 10 watt. Pengamatan dilakukan selama 10 hari dan diukur absorbansi maksimum setiap satu hari menggunakan spektrofotometer UV-Vis. Hasil analisis absorbansi menunjukkan terjadi pergeseran dan puncak baru pada senyawa kompleks pada panjang gelombang diatas 500 nm. Melalui perhitungan menggunakan orde 0, senyawa kurkumin dan Cu2+-kurkumin akan terdegradasi seluruhnya (absorbansi sama dengan 0) pada hari ke-16 dan ke-55. Kata Kunci: Senyawa analog kurkumin; Cu2+-kurkumin; Fotostabilitas; tetapan laju degradasi.

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“…However, high efficiencies on the same scale as silicon-based solar cells can only be achieved if similarly pure, high-quality-and usually highly toxic-materials are used. With less expensive and especially non-toxic materials, such as natural dyes, typical energy conversion efficiencies are on the order of a few percent or less [3][4][5][6][7][8]. It is well known that a reduction in cell area leads to a significant increase in efficiency [9,10].…”

Section: Introductionmentioning

confidence: 99%

Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates

et al. 2021

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Electrospinning can be used to prepare nanofibers from various polymers and polymer blends. The adhesion of nanofibers to the substrates on which they are electrospun varies greatly with the substrate material and structure. In some cases, good adhesion is desired to produce sandwich structures by electrospinning one material directly onto another. This is the case, e.g., with dye-sensitized solar cells (DSSCs). While both pure foil DSSCs and pure electrospun DSSCs have been examined, a combination of both technologies can be used to combine their advantages, e.g., the lateral strength of foils with the large surface-to-volume ratio of electrospun nanofibers. Here, we investigate the morphology and adhesion of electrospun nanofibers on different foil substrates containing materials commonly used in DSSCs, such as graphite, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) or TiO2. The results show that the foil material strongly influences the adhesion, while a plasma pretreatment of the foils showed no significant effect. Moreover, it is well known that conductive substrates can alter the morphology of nanofiber mats, both at microscopic and macroscopic levels. However, these effects could not be observed in the current study.

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Performance and stability analysis of curcumin dye as a photo sensitizer used in nanostructured ZnO based DSSC

Cited by 55 publications

References 30 publications

Bandgap Energy of TiO2/M-Curcumin Material (M = Na+, Mg2+, Cu2+)

Bandgap Energy of TiO2/M-Curcumin Material (M = Na+, Mg2+, Cu2+)

Kajian Fotostabilitas Senyawa Kurkumin dengan Penambahan Ion Logam Cu2+ Pada Irradiasi Sinar UV

Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates

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