4.7 Article

Advancing panchromatic effect for efficient sensitization of cyanine and hemicyanine-based dye-sensitized solar cells

Journal

MATERIALS TODAY ENERGY
Volume 36, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.mtener.2023.101337

Keywords

DSSC; Cyanine; Hemicyanine; Co-sensitization; Tandem cells; Synthesis; Panchromatic response

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Global warming and rising energy needs have spurred interest in alternative energy technologies. Dye-sensitized solar cells, particularly those using cyanine and hemicyanine-based organic photosensitizers, offer potential for cost-effective photovoltaic energy conversion. This article reviews the latest advances in the structural design and synthetic approaches, as well as the performance and photophysical characteristics of these photosensitizers. Strategies for utilizing them in solar cells and the potential for optimizing the conversion efficiency of photovoltaic cells are also discussed.
Global warming and rising energy needs have prompted a renewed interest in alternative energy technologies. In recent years, dye-sensitized solar cells have gained substantial interest due to their potential for inexpensive photovoltaic energy conversion. Among variable organic photosensitizers, those based on cyanine (Cy) and hemicyanine (HCy) are notable for their stability and high molar ab-sorption coefficients in the visible to near infrared spectral range. This article focuses on the most up-to-date advances and methods used in the structural design and synthetic approaches of Cy and HCy-based photosensitizers. The photophysical characteristics, photovoltaic parameters, and solar cell performances of their simple and advanced molecular structure engineering are discussed. The review also included recent strategies of utilizing Cy and HCy in solar cells as co-sensitizers or as part of the tandem devices to extend the panchromatic response. Hence, establishing a solid correlation between the structural design of Cy and HCy sensitizers, their panchromatic responses, and their conversion efficiencies would greatly help optimize new dyes to produce photovoltaic cells with efficient solar-energy conversion.& COPY; 2023 Elsevier Ltd. All rights reserved.

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