Building-integrated photovoltaic smart window with energy generation and conservation

Meng, Yuedong; Tan, Yutong; Li, Xin; Cai, Yangjian; Peng, Jinqing; Yi, Long

doi:10.1016/j.apenergy.2022.119676

Cited by 35 publications

(18 citation statements)

References 44 publications

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“…Although the power conversion efficiency (PCE) of perovskite solar cell (PSC) has been significantly improved from 3.8% to 25.6%, its average visible transmission (AVT) of PCS can not reach the minimum standard (ATV ∼25%) for visual comfort of windows. Recently, Long et al 399 proposed a BIPV smart window by combining PSC and hydrogel. The smart window displays excellent optoelectronic characteristics, such as acceptable AVT of 27.3% at 20 °C and 10.4% at above 40 °C, ΔT sol of 15.7%, low emissivity of 0.31, and PCE of 17.5%.…”

Section: Power Generationmentioning

confidence: 99%

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Zhang

Zhou

et al. 2023

Chem. Rev.

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Thermochromic energy efficient windows represent an important protocol technology for advanced architectural windows with energy-saving capabilities through the intelligent regulation of indoor solar irradiation and the modulation of window optical properties in response to real-time temperature stimuli. In this review, recent progress in some promising thermochromic systems is summarized from the aspects of structures, the micro-/mesoscale regulation of thermochromic properties, and integration with other emerging energy techniques. Furthermore, the challenges and opportunities in thermochromic energy-efficient windows are outlined to promote future scientific investigations and practical applications in building energy conservation.

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Section: Power Generationmentioning

confidence: 99%

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Zhang

Zhou

et al. 2023

Chem. Rev.

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“…Semitransparent photovoltaics has attracted considerable attention due to the unique capability to generate electricity from invisible light while allowing visible light to pass through, which opens up an emerging opportunity for the potential applications in power-generating window for buildingintegrated photovoltaics and vehicles. [1][2][3][4][5][6][7] Compared with inorganic semiconductor materials with intrinsically band-like absorption spectrum, organic semiconductors could provide transparent nature because of their discontinuous absorption that can be tailored by modifying the molecular structures to selectively absorb outside of the visible wavelength. Semitransparent organic photovoltaics (ST-OPVs) are thus becoming the next important research hotspot in the rapidly developing field of organic photovoltaics (OPVs).…”

Section: Introductionmentioning

confidence: 99%

Dual Photonic Structures Enable High‐Performance Semitransparent Organic Photovoltaics with Enhanced Light Utilization

et al. 2023

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Semitransparent organic photovoltaics (ST‐OPVs) offer promising prospects for self‐powered greenhouses and building‐integrated photovoltaic systems. However, a remaining critical challenge is to balance the two competing indexes of power conversion efficiency (PCE) and average visible transmittance (AVT). Herein, a synergetic strategy of light manipulation is developed to achieve high‐performance ST‐OPVs by employing dual photonic structures with a rear single‐layer optical coupling layer (OCL) and a front single‐layer antireflection coating (ARC). The material selection and thickness optimization of both OCL and ARC are systematically guided by combining theoretical simulations and experimental devices, leading to significantly enhanced light utilization in ST‐OPVs. As a result, the use of dual photonic structures enables ST‐OPVs based on the active layer of PM6:Y6 to demonstrate simultaneously a high AVT of 35.7% and a good PCE of 10.29%, yielding an excellent light utilization efficiency of 3.67% with a remarkable improvement of 43% comparing with that of the control device. This work provides a simple yet effective strategy of light manipulation for the development of high‐performance ST‐OPVs.

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“…[ 1–4 ] For example, integrating semitransparent photovoltaic into the windows provides an effective approach to improving building energy efficiency by reducing heat conversion in summer and heat losses in winter. [ 5 ] Besides, near‐infrared transparent solar cells can be applied to the top cells in tandem devices to exceed the Shockley–Queisser (S–Q) efficiency limit of single‐junction cells. [ 6,7 ] Many types of light‐absorbing materials has been considered for the semitransparent application, including chalcopyrite‐, CdTe‐, perovskite‐, organic‐, and dye‐sensitized‐based systems.…”

Section: Introductionmentioning

confidence: 99%

Precrystallized‐Heterojunction Strategy on Precursor Solution Enables High‐Performance Semitransparent Perovskite Solar Cells

Zou

Shan

Cao

et al. 2023

Advanced Optical Materials

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photovoltaic into the windows provides an effective approach to improving building energy efficiency by reducing heat conversion in summer and heat losses in winter. [5] Besides, near-infrared transparent solar cells can be applied to the top cells in tandem devices to exceed the Shockley-Queisser (S-Q) efficiency limit of single-junction cells. [6,7] Many types of light-absorbing materials has been considered for the semitransparent application, including chalcopyrite-, CdTe-, perovskite-, organic-, and dye-sensitized-based systems. [8] Among all the next-generation absorbing materials, semitransparent perovskite solar cells (ST-PSCs) are an ideal candidate due to their tunable bandgaps, high absorption coefficients, excellent physical properties, and low fabrication cost. These appealing advantages make ST-PSCs worth further study for applications in BIPV and tandem devices. The performance evaluation of ST-PSCs can be comprehensively evaluated by light utilization efficiency (LUE), achieved from power conversion efficiency (PCE) coupled with average photopic transmittance (APT) values. [9,10] In Lunt's model, APT is independent of the visible wavelength range and only reflects the photopic response of the human eye. [11] In general, the APT value is lower than the average transmittance (AVT) value, but it avoids overestimation and is consistent with perceived transparency of the window. [12,13] Apparently, PCE and APT are two competing parameters to restrict each other, which makes their optimizations more challenging than that of traditional opaque devices. Achieving an optimum trade-off between transparency and efficiency requires more elaborate and innovative work. Generally, ST-PSCs are composed of a thin perovskite active layer, transparent electrodes, and charge transport layers.To date, many studies have focused on various perovskite fabrication methods [14,15] and device architectures [16][17][18] to increase transparency and color neutrality. Reducing the thickness of the perovskite active layer is the most direct way to improve device transparency. Nevertheless, ultrathin perovskite absorbers are accompanied by nonhomogeneous film coverage due to the formation of voids and pinholes, [19] resulting in shunting paths and nonradiative recombination losses in the final device. Another strategy for achieving highly transparent perovskite films relies on perovskite microstructure engineering, such as

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Building-integrated photovoltaic smart window with energy generation and conservation

Cited by 35 publications

References 44 publications

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives

Dual Photonic Structures Enable High‐Performance Semitransparent Organic Photovoltaics with Enhanced Light Utilization

Precrystallized‐Heterojunction Strategy on Precursor Solution Enables High‐Performance Semitransparent Perovskite Solar Cells

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