Use of Congo red dye-formaldehyde as a new sensitizer-reductant couple for enhanced simultaneous solar energy conversion and storage by photogalvanic cells at the low and artificial sun intensity

Koli, Pooran; Dayma, Yashodhara; Pareek, Ramesh Kumar; Jonwal, Meenakshi

doi:10.1038/s41598-020-76388-5

Cited by 23 publications

(21 citation statements)

References 27 publications

(32 reference statements)

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“…6 as that for the blackened H-shaped glass tube based photogalvanic cells. 40 The similar pattern of the concerned changes may be attributed to the similar mechanistic aspect of the light absorption, photoexcitation, intersystem crossing (ISC), redox processes of the sensitizer and reductant molecules, and so on for all the cell designs as explained in Section 3.6 of this manuscript.…”

Section: Study Of the Conventional Photogalvanic Cells No 1 To 5 Fabricated Of Externally Blackened H-shaped Glass Tube (With Small Transmentioning

confidence: 80%

“…5, the pattern of (a) change of potential with the time during cell charging in sunlight, (b) cell i-V characteristics in illumination, and (c) change in power, potential, and current in dark conditions on retrieval of stored cell power, is same as reported for the similar conventional photogalvanic cells. 40 The value of the FF for the studied cells is low. The FF is directly affected by various factors like shunt resistance type at i sc point, series resistance at V oc point, and sensitizer stability.…”

Section: Study Of the Conventional Photogalvanic Cells No 1 To 5 Fabricated Of Externally Blackened H-shaped Glass Tube (With Small Transmentioning

confidence: 84%

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Simplified photogalvanic cell design with promise for the enhanced solar electricity generation and storage

et al. 2021

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Photogalvanicists have conventionally used complicated, multichambered, sophisticated, and very costly cell designs for solar electricity and storage. We authors have simplified cell design with encouraging electrical output as well.We authors have used a simple, cheap, and one-chambered cell design based on cylindrical glass tubes instead of the costly, conventional, and complex Hshaped glass tube-based cell fabrication design. The study has been done under similar electrolytic and illuminating conditions for different cell designs based on various blackened H-shaped glass tubes of the different diffusion lengths, nonblackened simple glass boiling tube, blackened simple glass boiling tube, and simple noncoated glass beakers. Nonblackened glass tube-based cell design has shown very good electrical output, that is, power 439 μW, current 2100 μA, potential 1045 mV, efficiency 6.1%, and storage capacity 130 minutes. Under similar chemical and illuminating conditions, the electrical output of cells fabricated of the simple glass tube is as good as that of the conventional cells made from the complex H-shaped glass tube. Furthermore, the cell design based on a simple cylindrical glass tube is three-edged more advantageous (in terms of the cost, electrical output, and ease of fabrication) over all other cell designs reported so far.

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Section: Study Of the Conventional Photogalvanic Cells No 1 To 5 Fabricated Of Externally Blackened H-shaped Glass Tube (With Small Transmentioning

confidence: 80%

Section: Study Of the Conventional Photogalvanic Cells No 1 To 5 Fabricated Of Externally Blackened H-shaped Glass Tube (With Small Transmentioning

confidence: 84%

Simplified photogalvanic cell design with promise for the enhanced solar electricity generation and storage

et al. 2021

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“…The Pt working electrode has been extensively used in the earlier studies on the Photo galvanic cells 4,12,31,36,37 . Hence, the Pt is considered as a material of choice in the present study, besides being a noble metal, the Pt is also highly resistant to the corrosion.…”

Section: Resultsmentioning

confidence: 99%

Photogalvanics of Dodecyltrimethyl Ammonium Bromide‐Quinoline Yellow‐alkali: A solar energy conversion, storage, photostability, and spectral study

Jonwal

Koli

Dayma

et al. 2022

Intl J of Energy Research

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Summary The technology to harness solar power has been evolving continuously with a recent focus on simultaneous power storage as well. Photogalvanic (PG) cell is a promising technology for simultaneous solar power and storage. The nature of the sensitizer, reductant, surfactant, and electrodes are the key factor determining the efficiency, stability, and power storage capacity of the PG cells. The use of a more stable dye with good diffusivity and conductivity realized through the most suitable surfactant has evaded the attention of researchers. Therefore, in the present study, the photogalvanics of the stable Quinoline Yellow (QY) dye photosensitizer in the presence of the Dodecyltrimethyl Ammonium Bromide (DTAB) surfactant, and Cellobiose reductant at an elevated pH has been studied for solar energy conversion and storage. The entirely novel and new photogalvanic system has shown abruptly enhanced electrical performance of the PG cell as potential 900 mV, current 10 000 μA, and power 989 μW. Encouraging photogalvanics may be attributed primarily to the greater QY dye‐DTAB surfactant interaction enhanced dye solubility, stability, and diffusion through the electrolyte. Spectrometric and conductometric study of the electrolyte has validated good photostability and conductivity of the electrolyte solution. Based on published literature and observed facts, a most plausible mechanism for the photogeneration of the current and power storage capacity has also been proposed. The present research does not introduce any new mechanism for the photo‐generation of the current, but a new and novel cell fabrication design with greatly enhanced electrical output in comparison to that in earlier studies. Novelty statement The cationic Dodecyltrimethyl Ammonium Bromide surfactant and Quinoline Yellow (QY) anionic dye sensitizer has been exploited in the presence of Cellobiose reductant for enhanced dipole‐dipole interactions for further enhancing the photogalvanics. The hypsochromic and hypochromic shift of main band of QY in electrolyte may be attributed to the QY‐DTAB complex formation due to interaction between the anionic QY dye and cationic DTAB surfactant. The present study shows abruptly enhanced electrical output (potential 900 mV, current 10 000 μA, power 989 μW).

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“…Solar energy to electricity conversion is considered as one of the best sustainable technology for future energy generation. 1,2 It is produced in multiple ways among which photovoltaic (PV) conversion of solar energy is the most capable system to meet the increasing energy demand. 3,4 Converting solar energy to electric energy requires the construction of cost-effective and efficient PV solar cells to fulfil the need for accessible clean energy exerting the minimum ecological flaws.…”

Section: Introductionmentioning

confidence: 99%

“…Solar energy to electricity conversion is considered as one of the best sustainable technology for future energy generation 1,2 . It is produced in multiple ways among which photovoltaic (PV) conversion of solar energy is the most capable system to meet the increasing energy demand 3,4 .…”

Section: Introductionmentioning

confidence: 99%

Organic sensitization of graphene oxide and reduced graphene oxide thin films for photovoltaic applications

et al. 2021

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In this work, a new organic compound (K-Azo) was introduced to enhance the electrical and optical performance of graphene oxide (GO) and reduced GO (rGO) nanostructured films. The improved and modified chemical vapour method was employed for the synthesis of GO and rGO. The photophysical characterization of thin films was performed by applying analytical techniques including X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, ultraviolet-visible, and Raman spectroscopy. The electrical properties (I-V characteristic) of GO and rGO thin films displayed higher conductivity which was 4.07 × 10 −7 and 1.10 × 10 −3 S/cm, respectively in the presence of organic sensitizer. However, GO and rGO thin films showed 9.91 × 10 −7 and 6.17 × 10 −4 S/cm, respectively in the absence of K-Azo sensitizer.Optical and electrical investigations indicated that the characteristics of GO and rGO were improved due to the presence of organic sensitizer. The longrange π-electron delocalization in organic sensitizer contributed to higher conductivity for potential photovoltaic solar cell applications.

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Use of Congo red dye-formaldehyde as a new sensitizer-reductant couple for enhanced simultaneous solar energy conversion and storage by photogalvanic cells at the low and artificial sun intensity

Cited by 23 publications

References 27 publications

Simplified photogalvanic cell design with promise for the enhanced solar electricity generation and storage

Simplified photogalvanic cell design with promise for the enhanced solar electricity generation and storage

Photogalvanics of Dodecyltrimethyl Ammonium Bromide‐Quinoline Yellow‐alkali: A solar energy conversion, storage, photostability, and spectral study

Organic sensitization of graphene oxide and reduced graphene oxide thin films for photovoltaic applications

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