Recent Progress in Materials and Device Design for Semitransparent Photovoltaic Technologies

Advanced Energy Materials, Год журнала: 2023, Номер 13(39)

Опубликована: Сен. 5, 2023

Abstract Semitransparent photovoltaic (STPV) solar cells offer an immense opportunity to expand the scope of photovoltaics special applications such as windows, facades, skylights, and so on. These new opportunities have encouraged researchers develop STPVs using traditional thin‐film cell technologies (amorphous‐Si, CdTe, CIGS or emerging (organic, perovskites, dye‐sensitized). There are considerable improvements in both power conversion efficiency (PCE) semitransparency these STPV devices. This review studies device structure state‐of‐the‐art devices thereby analyzes different approaches toward maximizing product PCE average visible transmittance. The origins losses during opaque‐to‐semitransparent transition discussed. In addition, critical practical aspects relevant all devices, compatibility top transparent electrode with structure, buffer layer optimization, light management engineering, scale‐up, stability, also reported. overview is expected facilitate across identify overcome challenges achieving higher utilization efficiencies STPVs.

Язык: Английский

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Trans‐Reflective Structural Color Filters Assisting Multifunctional‐Integrated Semitransparent Photovoltaic Window

Advanced Materials, Год журнала: 2023, Номер 35(22)

Опубликована: Март 17, 2023

Multifunction-integrated semitransparent organic photovoltaic cells (STOPVs), with high power generation, colorful transmittance/reflectance, excellent ultraviolet (UV) protection, and thermal insulation, are fully in line the concept of architectural aesthetics photoprotection characteristics for building-integrated photovoltaic-window. For indelible rainbow color window, one crucial issue is to realize integration these photons- photoelectric-related multifunction. Herein, dynamic transmissive reflective structural controllable filters, asymmetrical metal-insulator-metal (MIM) configurations (20 nm-Ag-HATCN-30 nm-Ag) through machine learning, deliberately designed STOPV devices. This endows resultant integrated devices ≈5% enhanced conversion efficiency (PCE) than bare-STOPVs, gifted UV (300-400 nm) blocking rates as 93.5, 94.1, 90.2, 94.5%, well a superior infrared radiation (IR) (700-1400 rejection approaching 100% transparent purple-, blue-, green- red-STOPV cells, respectively. Most importantly, benefiting from photonic recycling effect beyond microcavity resonance wavelength, reported quantum utilization (QUE) 80%, first presented transparent-green-STOPVs an ultra-narrow bandgap 1.2 eV. These Febry-Pérot filters can also be extended silicon- perovskite-based optoelectric make it possible integrate additional target optical functions multi-purpose

Язык: Английский

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Efficient Semitransparent Organic Solar Cells with CRI over 90% Enabled by an Ultralow‐Bandgap A‐DA'D‐A Small Molecule Acceptor

Advanced Functional Materials, Год журнала: 2023, Номер 34(50)

Опубликована: Сен. 5, 2023

Abstract Semitransparent organic solar cells (ST‐OSCs) can function as power‐generating windows due to their ability allow visible light go‐through for human eyesight while absorbing low‐energy photons in the near‐infrared region photocurrent generation. In this regard, effective ST‐OSCs with high utilization efficiency (LUE) and color rendering index (CRI) be developed via a synergistic material device engineering strategy. Herein, an A‐DA'D‐A acceptor BZO‐4Cl is synthesized ultralow optical bandgap of 1.26 eV bathochromically shifted absorption roughly 60 nm respect Y6. Initially, opaque devices using PTB7‐Th donor show power conversion (PCE) 14.12% , which listed one highest efficiencies PTB7‐Th‐based OSCs so far. Then, through these efforts optimizations bulk‐heterojunction(BHJ) composition, top electrodes anti‐reflection layer, cutting‐edge ST‐OSC demonstrates LUE 4.02%, CRI 90.67%, making it best‐performing both values. These results indicate that presented study have significant potential use applications possess transparent energy‐generation functions.

Язык: Английский

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Volatile Solid‐Assisted Molecular Assembly Enables Eco‐Friendly Processed Organic Photovoltaic Cells with High Efficiency and Photostability

Advanced Functional Materials, Год журнала: 2024, Номер 34(17)

Опубликована: Янв. 4, 2024

Achieving environmentally friendly solvent-processed high-performance organic photovoltaic cells (OPVs) is a crucial step toward their commercialization. Currently, OPVs with competitive efficiencies rely heavily on harmful halogenated solvent additives. Herein, the green and low-cost 9-fluorenone (9-FL) employed as solid additive. By using o-xylene/9-FL system, PM6:BTP-eC9-based devices deliver power-conversion of 18.6% 17.9% via spin-coating blade-coating respectively, outperforming all PM6:Y-series binary solvents. It found that addition 9-FL can regulate molecular assembly both PM6 BTP-eC9 in film-formation (molecule-level mixing) post-annealing (thermal-assisted reorganization additive volatilization) stages, so to optimize blend morphology. As result, charge transport ability donor acceptor phases are simultaneously enhanced, trap-assisted recombination reduced, which contributes higher short-circuit current density fill factor. Moreover, generation photo-induced traps significantly suppressed, resulting improved stability under illumination. further demonstrated excellent universality various photoactive systems, making it promising strategy advance development eco-friendly OPVs.

Язык: Английский

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Collaborative regulation strategy of donor and acceptor analogues realizes multifunctional semitransparent organic solar cells with excellent comprehensive performance

Energy & Environmental Science, Год журнала: 2024, Номер 17(8), С. 2825 - 2836

Опубликована: Янв. 1, 2024

We propose a collaborative regulation strategy of donor and acceptor analogues to develop multi-functional ST-OSCs with highly comprehensive performance.

Язык: Английский

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