Roadmap for phase change materials in photonics and beyond

Prabhathan, Patinharekandy; Sreekanth, Kandammathe Valiyaveedu; Teng, Jinghua; Ko, Joo Hwan; Yoo, Young Jin; Jeong, Hyeon-Ho; Lee, Yubin; Zhang, Shoujun; Cao, Tun; Popescu, Cosmin-Constantin; Mills, Brian; Gu, Tian; Fang, Zhuoran; Chen, Rui; Tong, Hao; Wang, Yi; He, Qiang; Lu, Yitao; Liu, Zhiyuan; Yu, Han; Mandal, Avik; Cui, Yihao; Ansari, Abbas Sheikh; Bhingardive, Viraj; Kang, Myungkoo; Lai, Choon Kong; Merklein, Moritz; Müller, Maximilian J.; Song, Young Min; Tian, Zhen; Hu, Juejun; Losurdo, Maria; Majumdar, Arka; Miao, Xiangshui; Chen, Xiao; Gholipour, Behrad; Richardson, Kathleen A.; Eggleton, Benjamin J.; Wuttig, Matthias; Singh, Ranjan

doi:10.1016/j.isci.2023.107946

Cited by 22 publications

(1 citation statement)

References 219 publications

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“…In contrast to these materials, PCMs possess an exceptionally high refractive index, thereby minimizing the required number of layers within the structure to attain an equivalent level of reflectance. However, PCM-based DBR structures and their potential application as a color filter remain limited due to their inherent absorption within the visible spectral region despite numerous novel functionalities − and high refractive index. In order to realize an actively tunable DBR for high-purity color generation, we select an ultralow loss PCM such as Sb 2 S 3 to serve as the high refractive index layers in the DBR.…”

Section: Design Of A-dbr-based High-purity Reflective Colorsmentioning

confidence: 99%

Aperiodic Bragg Reflectors for Tunable High-Purity Structural Color Based on Phase Change Material

Jana,

Sreekanth,

Abdelraouf

et al. 2024

Nano Lett.

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Tunable thin-film coating-based reflective color displays have versatile applications including image sensors, camouflage devices, spatial light modulators, and intelligent windows. However, generating high-purity colors using such coatings have posed a challenge. Here, we reveal high-purity color generation using an ultralow-loss phase change material (Sb 2 S 3 )-based tunable aperiodic distributed Bragg reflector (A-DBR). By strategically adjusting the periodicity of the adjacent layers of A-DBRs, we realize a narrow photonic bandgap with high reflectivity to generate high-purity orange and yellow colors. In particular, we demonstrate an A-DBR with a large photonic bandgap tunability by changing the structural phase of Sb 2 S 3 layers from amorphous to crystalline. Moreover, we experimentally tailor multistate tunable colors through external optical stimuli. Unlike conventional nano thin-film coatings, our proposed approach offers an irradiance-free, narrowband, and highly reflective color band, achieving exceptional color purity by effectively suppressing reflections in off-color bands.

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Section: Design Of A-dbr-based High-purity Reflective Colorsmentioning

confidence: 99%

Aperiodic Bragg Reflectors for Tunable High-Purity Structural Color Based on Phase Change Material

Jana,

Sreekanth,

Abdelraouf

et al. 2024

Nano Lett.

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Research Progress of Photovoltaic Cooling Systems Based on Phase Change Materials: An Overview

Liu,

Zhang,

Hua

et al. 2024

Energy Tech

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Photovoltaic technology plays a crucial role in harnessing renewable energy. While photovoltaic panels directly convert solar energy into electricity, more than 50% of solar radiation is lost as waste heat, diminishing the overall efficiency of the panels. This study reviews various cooling technologies for photovoltaic systems, focusing on the use of phase change materials for cooling in photovoltaic systems. Phase change materials, known for their high latent heat capacity, are extensively used in thermal energy storage applications. Incorporating phase change materials in photovoltaic systems can increase thermal storage potential by 30–50% compared to conventional systems, leading to a 70% extension in heat storage duration and various levels of enhanced power output. The main purpose of the article is to review the advantages and disadvantages of various technologies, determine the research direction of phase change materials for cooling systems in photovoltaics, and ensure the reliability of this technology.

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3D Confinement Stabilizes the Metastable Amorphous State of Antimony Nanoparticles – A New Material for Miniaturized Phase Change Memories?

Frommelius,

Wirth,

Ohlerth

et al. 2024

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The wet‐chemical synthesis of 3D confined antimony nanoparticles (Sb‐NP) at low and high temperatures is described. Using reaction conditions that are mild in temperature and strong in reducing power allows the synthesis of amorphous Sb‐NP stabilized with organic ligands. Exchanging the organic ligand 1‐octanethiol by iodide enabled to investigate the unusual strong stability of this metastable material through simultaneous thermal analysis combining differential scanning calorimetry and thermogravimetric analysis. Additionally, in situ high temperature powder x‐ray diffraction (p‐XRD) shows a significant increase in stabilization of the amorphous phase in comparison to thin layered, 1D confined Sb or bulk material. Further, it is shown with scattering‐type scanning near‐field optical microscopy (s‐SNOM) experiments that the optical response of the different phases in Sb‐NP make the distinctness of each phase possible. It is proposed that the Sb‐NP introduced here can serve as a 3D‐confined optically addressable nanomaterial of miniaturized phase change memory devices.

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Roadmap for phase change materials in photonics and beyond

Cited by 22 publications

References 219 publications

Aperiodic Bragg Reflectors for Tunable High-Purity Structural Color Based on Phase Change Material

Aperiodic Bragg Reflectors for Tunable High-Purity Structural Color Based on Phase Change Material

Research Progress of Photovoltaic Cooling Systems Based on Phase Change Materials: An Overview

3D Confinement Stabilizes the Metastable Amorphous State of Antimony Nanoparticles – A New Material for Miniaturized Phase Change Memories?

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