Inverted Semi‐transparent Polymer Solar Cells with Transparency Color Rendering Indices approaching 100

Czolk, Jens; Puetz, Andreas; Kutsarov, Dimitar; Reinhard, Manuel; Lemmer, Uli; Colsmann, Alexander

doi:10.1002/aenm.201200532

Cited by 71 publications

(59 citation statements)

References 17 publications

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“…There are several organic-based approaches that produce semi-transparent OPV devices that exhibit good electrical performance (Figure 8), whereby they are composed of organic electronic materials, and transparent electrodes based on a wide range of different materials, including conducting polymers [122][123][124][125], thin metal films [126], sputtered transparent conducting oxides of LiCoO2/Al [127], carbon nanotubes [122], graphene [128], and silver nanowires (Ag NWs) [129][130][131][132][133]. Recently, a study by Beiley et al [134], has shown the development of a semi-transparent OPV which consists of a silver nanowire (Ag NW) and zinc oxide nanoparticle (ZnO NP) composite top electrode, and has a power conversion efficiency of 5.0%.…”

Section: Organic Photovoltaics (Opvs)mentioning

confidence: 99%

Thin Films for Advanced Glazing Applications

et al. 2016

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Functional thin films provide many opportunities for advanced glazing systems. This can be achieved by adding additional functionalities such as self-cleaning or power generation, or alternately by providing energy demand reduction through the management or modulation of solar heat gain or blackbody radiation using spectrally selective films or chromogenic materials. Self-cleaning materials have been generating increasing interest for the past two decades. They may be based on hydrophobic or hydrophilic systems and are often inspired by nature, for example hydrophobic systems based on mimicking the lotus leaf. These materials help to maintain the aesthetic properties of the building, help to maintain a comfortable working environment and in the case of photocatalytic materials, may provide external pollutant remediation. Power generation through window coatings is a relatively new idea and is based around the use of semi-transparent solar cells as windows. In this fashion, energy can be generated whilst also absorbing some solar heat. There is also the possibility, in the case of dye sensitized solar cells, to tune the coloration of the window that provides unheralded external aesthetic possibilities. Materials and coatings for energy demand reduction is highly desirable in an increasingly energy intensive world. We discuss new developments with low emissivity coatings as the need to replace scarce indium becomes more apparent. We go on to discuss thermochromic systems based on vanadium dioxide films. Such systems are dynamic in nature and present a more sophisticated and potentially more beneficial approach to reducing energy demand than static systems such as low emissivity and solar control coatings. The ability to be able to tune some of the material parameters in order to optimize the film performance for a given climate provides exciting opportunities for future technologies. In this article, we review recent progress and challenges in these areas and provide a perspective for future trends and developments.

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Section: Organic Photovoltaics (Opvs)mentioning

confidence: 99%

Thin Films for Advanced Glazing Applications

et al. 2016

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“…[20][21] Along with the investigation, the STPSC with high efficiency and transmittance cannot meet BIPV application requirement, such as the building aesthetics and natural transmitted light. 29 However, the obtained higher CRI was always accompanied with lower PCE. It means that the light transmitted though STPSCs window can keep the neutral color property of the incident light source, such as a sun or a lamp.…”

Section: Introductionmentioning

confidence: 92%

“…[12][13][14][15][16] BIPV is a novel application of solar energy, which has been considered as an attractive research based on the combination of large area building and huge photovoltaic market. [27][28][29][30] The neutral color degree of transmitted light is dependent on the value of CRI by calculating. [20][21] Along with the investigation, the STPSC with high efficiency and transmittance cannot meet BIPV application requirement, such as the building aesthetics and natural transmitted light.…”

Section: Introductionmentioning

confidence: 99%

Semitransparent polymer solar cells with simultaneously improved efficiency and color rendering index

Yao

et al. 2015

Phys. Chem. Chem. Phys.

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Herein, we demonstrate a kind of high performance semi-transparent polymer solar cell (STPSC) with a significantly improved color rendering index (CRI) and power conversion efficiency (PCE) by introducing one-dimensional photonic crystals (1DPCs), which are intentionally designed to strongly reflect the pristine weak absorbed light to flatten the concavo-convex transmittance spectrum of STPSCs. The transmitted light from the STPSC device with 4 pairs of 1DPCs under AM 1.5G illumination shows extraordinary color rendering capacities, which contribute an increased CRI from 79 to 91, combined with an enhanced PCE from 4.14% to 5.01% compared to devices without 1DPCs. The simultaneously improved optical and electrical performance suggests that STPSCs can provide a unique feature, which is suitable for building integrated photovoltaic applications.

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“…16 Then, the color rendering index (CRI) of STPSC, which is a quantitative parameter of neutral color property, began to mentioned. [17][18][19][20] It is well known that the CRI is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal light source， which is defined by the Commission Internationale de L'Eclairage (CIE, in French). [21][22][23] Light sources with a high CRI are desirable in color-critical applications such as neonatal care, photography and cinematography.…”

Section: Introductionmentioning

confidence: 99%

Improved color rendering index of low band gap semi-transparent polymer solar cells using one-dimensional photonic crystals

Shen

et al. 2015

RSC Adv.

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Neutral color semitransparent polymer solar cells (STPSCs) have attracted wide attention due to their unique application on building integrated photovoltaic (BIPV) in recent years. Herein, we report a kind of low bandgap STPSCs with high color rendering index (CRI), which can be modulated by one-dimensional photonic crystals (1DPCs). To flat transmitted light and eliminate chromatic aberration, the 1DPCs were integrated on top of STPSCs as a wavelength-dependent filter. We design the centre wavelength of 1DPC as 520 nm to level the concavo-convex transmittance spectrum induced by the absorption of PSBTBT:PC60BM. By turning the pairs of 1DPCs, the optimal STPSCs with 3 pairs of 1DPC achieve an increased CRI from 77 to 91 under AM 1.5G illumination light source, a suppressed chromaticity difference (DC) from 0.0308 to 0.0045 and a enhanced power conversion efficiency(PCE) from 3.43 % to 4.01 % compared to devices without 1DPC. Furthermore, we believe that the new method of STPSCs incorporating with 1DPCs filters to balance the total transmittance spectrum and enhance the CRI will play a important role in future BIPV applications. Fig. 1 Device structure of STPSC with 1DPC.

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Inverted Semi‐transparent Polymer Solar Cells with Transparency Color Rendering Indices approaching 100

Cited by 71 publications

References 17 publications

Thin Films for Advanced Glazing Applications

Thin Films for Advanced Glazing Applications

Semitransparent polymer solar cells with simultaneously improved efficiency and color rendering index

Improved color rendering index of low band gap semi-transparent polymer solar cells using one-dimensional photonic crystals

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