Unraveling the Impact of Thickness on Active Layer Morphology and Device Performance of Semitransparent Organic Solar Cells: A Comprehensive Study

Khandelwal, Kanupriya; Shankar S, Shyam; Malhotra, Prateek; Biswas, Subhayan; Panghal, Abhishek; Roy, Susanta Sinha; Sharma, Ganesh D.

doi:10.1021/acsaem.3c01685

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…This allows efficient utilization of near-infrared light while maintaining transparency within the visible-light spectrum. , Additionally, the solution processability of organic materials offers the production of lightweight, low-cost, and flexible solar cells. , In comparison to opaque organic photovoltaics (OPVs), semitransparent OPVs (ST-OPVs) possess several critical parameters such as average visible transmittance (AVT), color-rendering index (CRI), color correlated temperature (CCT), and light utilization efficiency (LUE = PCE × AVT), which are essential for the comprehensive evaluation of transparent OPV technologies. , There is a trade-off between PCE and AVT. Balancing transparency and device efficiency is the primary challenge in achieving highly efficient ST-OPVs . Additionally, precision in demonstrating color is crucial for ST-OPVs and human vision-related applications.…”

Section: Introductionmentioning

confidence: 99%

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Advancing Multifunctional Semitransparent Organic Solar Cells through Strategic Optical Layer Integration

Khandelwal,

Biswas,

Sharma

2024

ACS Appl. Energy Mater.

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Semitransparent organic solar cells (ST-OSCs) hold immense promise across diverse applications such as seamlessly integrated building photovoltaics, floating solar arrays, innovative agrivoltaic systems, and stylish wearable electronics. These cells offer multifunctionality with their unique blend of power generation, light permeability, and customizable hues. Particularly, bifacial ST-OSCs emerge as a pivotal solution capable of harnessing light from both front and rear surfaces. Their ability to absorb light from both sides enhances the energy efficiency, especially in environments with high reflective surfaces. Moreover, these lightweight and flexible cells can be integrated into unconventional locations, supporting innovative architectural designs and portable energy solutions. In this article, an optically optimized Sb2O3 layer featuring a high refractive index and minimal optical loss in the visible to near-infrared region is paired with the Ag film. This research delves into enhancing the performance of bifacial ST-OSCs through the strategic incorporation of an optical coupling layer on top of the Ag electrode. This ingenious addition not only mitigates reflectance from the top electrode but also enhances parameters such as average visible transmittance, color-rendering index, and color correlated temperature and the overall bifaciality of the device. These findings suggest that interfacial engineering and optical coupling are effective strategies for developing high-performance ST-OSCs that exhibit vibrant colors, excellent transparency, and high efficiency.

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Section: Introductionmentioning

confidence: 99%

“…Balancing transparency and device efficiency is the primary challenge in achieving highly efficient ST-OPVs. 21 Additionally, precision in demonstrating color is crucial for ST-OPVs and human vision-related applications.…”

Section: ■ Introductionmentioning

confidence: 99%

Advancing Multifunctional Semitransparent Organic Solar Cells through Strategic Optical Layer Integration

Khandelwal,

Biswas,

Sharma

2024

ACS Appl. Energy Mater.

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Advancements in Colorful Semitransparent Organic Solar Cells: Enhancing Aesthetic Appeal and Efficiency

Khandelwal,

Biswas,

Sharma

2024

Solar RRL

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Aesthetics play a pivotal role in the development of semitransparent organic solar cells (ST‐OSCs), enabling their seamless integration into buildings and various structures without compromising visual appeal while generating electricity. The incorporation of attractive designs not only enhances consumer acceptance and marketability but also broadens the applicability of ST‐OSCs to windows, facades, and electronic devices. Moreover, aesthetically pleasing solar cells foster a positive, ecofriendly image, driving innovation in renewable energy technologies. This study introduces an effective method for advancing the aesthetic appeal of ST‐OSCs through Fabry–Perot microcavity resonance, which increases color saturation by narrowing the transmittance spectrum. A novel Fabry–Perot etalon electrode, consisting of Ag/barium (II) fluoride (BaF2)/Ag, is integrated as a top transparent electrode, achieving both high color purity and high‐power conversion efficiency (PCE) in colorful ST‐OSCs. By precisely controlling the thickness of the BaF2 layer, a wide color gamut with high color purity is achieved, producing vibrant blue, green, and red hues. The photovoltaic devices were fabricated in ambient conditions, with the blue device exhibiting a PCE of 11.52% and a transmittance peak (T%) of 31.66%, the green device showing a PCE of 11.37% with a T% of 26.66%, and the red device achieving a PCE of 11.29% with a T% of 12.24%. These colorful ST‐OSCs, with their required transmitted colors and high color purity, hold significant potential for future developments in energy harvesting.

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On the theoretical framework for meniscus-guided manufacturing of large-area OPV modules

Gumpert,

Janßen,

Basu

et al. 2024

Progress in Organic Coatings

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Unraveling the Impact of Thickness on Active Layer Morphology and Device Performance of Semitransparent Organic Solar Cells: A Comprehensive Study

Cited by 4 publications

References 44 publications

Advancing Multifunctional Semitransparent Organic Solar Cells through Strategic Optical Layer Integration

Advancing Multifunctional Semitransparent Organic Solar Cells through Strategic Optical Layer Integration

Advancements in Colorful Semitransparent Organic Solar Cells: Enhancing Aesthetic Appeal and Efficiency

On the theoretical framework for meniscus-guided manufacturing of large-area OPV modules

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