Development of colored perovskite solar cells using cholesteric helicoidal superstructures

Bae, Sangwok; Noh, Young Wook; Park, Dong-Sun; Song, Myoung Hoon; Choi, Suk–Won

doi:10.1016/j.nanoen.2021.106801

Cited by 19 publications

(11 citation statements)

References 44 publications

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“…The chemical structures of these components are listed in Scheme . The concentration of the chiral dopant was controlled to induce the formation of chiral periodic structures, specifically helical structures. ,− Higher concentrations of the chiral dopant resulted in stronger chirality, corresponding to shorter periodic structures. ,, Conversely, lower concentrations of the chiral dopant resulted in a reduced chirality, corresponding to longer periodic structures. The handedness (twist) of the mixtures is controlled by incorporating an R - or S -type chiral dopant .…”

Section: Resultsmentioning

confidence: 99%

Circularly Polarized Light Emission from Nonchiral Perovskites Incorporated into Nanoporous Cholesteric Polymer Templates

Choi,

Lee,

Park

et al. 2023

ACS Nano

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Chiral perovskites have garnered significant attention, owing to their chiroptical properties and emerging applications. Current fabrication methods often involve complex chemical synthesis routes. Herein, an alternative approach for introducing chirality into nonchiral hybrid organic−inorganic perovskites (HOIPs) using nanotemplates composed of cholesteric polymeric networks is proposed. This method eliminates the need for additional molecular design. In this process, HOIP precursors are incorporated into a porous cholesteric polymer film, and two-dimensional (2D) HOIPs grow inside the nanopores. Circularly polarized light emission (CPLE) was observed even though the selective reflection band of the cholesteric polymer films containing a representative HOIP deviated from the emission wavelength of the 2D HOIP. This effect was confirmed by the induced circular dichroism (CD) observed in the absorbance band of the HOIP. The observed CPLE and CD are attributed to the chirality induced by the template in the originally nonchiral 2D HOIP. Additionally, the developed 2D HOIP exhibited a long exciton lifetime and good stability under harsh conditions. These findings provide valuable insights into the development and design of innovative optoelectronic materials.

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Section: Resultsmentioning

confidence: 99%

Circularly Polarized Light Emission from Nonchiral Perovskites Incorporated into Nanoporous Cholesteric Polymer Templates

Choi,

Lee,

Park

et al. 2023

ACS Nano

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“…[21,325] Recently, Bae et al demonstrated colored PSCs using liquid cholesteric helicoidal superstructures. [328] This approach allows easy color tuning through the modulation of the chiral dopant content, birefringence of the host liquid and the optical design respectively. An example of the compatibility of painting technology at industrialization level is colored PV using ceramic screen printing provided by Onyx Solar.…”

Section: Opaque Colored Solar Cell Technologiesmentioning

confidence: 99%

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Meddeb

Götz‐Köhler

Neugebohrn

et al. 2022

Advanced Energy Materials

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solar, wind, hydro, geothermal, and biomass, to enable a steady mitigation of greenhouse gas emissions, which are causing the planetary climate change and global warming. [5][6][7] Additionally, due to the economic development and the worldwide urbanization, a continuous rise of the global energy consumption across all key sectors, that is, power, heating, industry, and transport is occurring. This is expressed by an increase in the annual global electricity demand by 4.5% in 2021 corresponding to additional 1000 TWh. [4] Hence, strict criteria for the selection of competitive and abundant energy alternatives are imposed, requiring high yield at affordable prices. [8] The share of total renewables power generation excluding hydropower exceeded 3000 TWh in 2020, corresponding to almost 12% of the global electricity generation. [3] Considering an effective synergy between various sustainable energy candidates, solar photovoltaics (PV) have demonstrated great capabilities that can satisfy the requirements in the pathway towards 100% renewable electricity. [9][10][11][12] Owing to the research and development activities over the last decades, the power conversion efficiencies of solar cells (SC) have skyrocketed with a prolonged operation lifetime (>15 years) and a drastic plummeting in manufacturing costs (global average module selling price below $0.25 per W). [6,[13][14][15] The rapid universal deployment of PV resulted in a contribution of about 3.4% in the worldwide electricity generation in 2020. [3] Presently, the global installed PV capacity is approaching 1 TW and it is envisioned to reach ≈10 TW by 2030 and 30 to 70 TW by 2050. [16] Interestingly, along with massive electricity production using conventional solar power plants and rooftop solar panels, ancillary concepts of PV offer new strategies for supplying modern systems in versatile applications. [17][18][19] Moreover, diverse functionalities beyond solar energy harvesting can be afforded by adaptive PV, including aesthetic appearance, visual comfort and thermal management. [17,18,20,21] The distributed nature and the ubiquitous accessibility of multifunctional PV products are substantial features of solar PV in contrast to other renewable energies. However, traditional SCs dominating the market impose intrinsic optoelectronic and thermomechanical limitations, that prohibit their multifunctional utilization. To overcome these drawbacks, novel functional materials and innovative device architecture Solar photovoltaics (PV) offer viable and sustainable solutions to satisfy the growing energy demand and to meet the pressing climate targets. The deployment of conventional PV technologies is one of the major contributors of the ongoing energy transition in electricity power sector. However, the diversity of PV paradigms can open different opportunities for supplying modern systems in a wide range of terrestrial, marine, and aerospace applications. Such ubiquitous and versatile applications necessitate the development of PV technologies with customized desig...

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“…We also analyze the CSR optics in great detail in air as well as in an index matching binder, revealing that the latter minimizes specular reflection, indiscriminate scattering, and blue-shifted Bragg diffraction under ambient illumination, meaning that we can generate white while keeping both absorption and broad-band scattering to an absolute minimum. The resulting films with broadly tunable color can be extremely powerful in contexts like photovoltaic cells and solar heat collectors, [58][59][60][61] where arbitrary coloring and decoration are highly desirable for esthetic and architectural reasons, yet the light loss that comes with traditional dyes, pigments, and scatterers would be detrimental to the energy conversion/heat storage performance.…”

Section: Introductionmentioning

confidence: 99%

Pixelating Structural Color with Cholesteric Spherical Reflectors

Agha

Zhang

Geng

et al. 2023

Advanced Photonics Research

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While structural color is a powerful means of obtaining saturated and durable pigments that minimize absorption, scattering, and negative environmental impact, appearing naturally in animals and plants as well as in carefully designed artificial composites, it is fundamentally limited to spectral colors, leaving white and other mixed colors elusive. It also normally suffers from a strong viewing angle dependence, making color definition difficult. Herein, it is demonstrated that these challenges can be overcome by using cholesteric spherical reflectors (CSRs), spheres of polymerized cholesteric liquid crystal with radial alignment of the self‐assembled helical structure. Exhibiting omnidirectional selective retroreflectivity of well‐defined color, CSRs are discrete “packages” of structural color. This allows them to be used as pixels for generating nonspectral colors, following the principle of digital displays. A method of creating densely packed monolayers of CSRs with red (R), green (G), and blue (B) retroreflection is developed. Mixing them in equal proportions gives a white surface. By embedding the CSRs in an index matching transparent medium, nonselective specular reflections and scattering are avoided. The approach can be used to create arbitrary colors, including nonspectral ones, without any absorption or nonselective scattering, opening doors to decorating surfaces as desired while minimizing light loss.

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Development of colored perovskite solar cells using cholesteric helicoidal superstructures

Cited by 19 publications

References 44 publications

Circularly Polarized Light Emission from Nonchiral Perovskites Incorporated into Nanoporous Cholesteric Polymer Templates

Circularly Polarized Light Emission from Nonchiral Perovskites Incorporated into Nanoporous Cholesteric Polymer Templates

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Pixelating Structural Color with Cholesteric Spherical Reflectors

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