Trends in defect passivation technologies for perovskite-based photosensor

Park, Jun-Hee; Kim, Hong-Rae; Kang, Min-Jung; Son, Dong Hee; Pyun, Jae-Chul

doi:10.1007/s43207-023-00347-9

J. Korean Ceram. Soc.

2023

DOI: 10.1007/s43207-023-00347-9

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Trends in defect passivation technologies for perovskite-based photosensor

Jun-Hee Park,

Hong-Rae Kim,

Min-Jung Kang

et al.

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2024

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Cited by 6 publications

References 117 publications

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Spin‐Orbital Ordering Effects of Light Emission in Organic–Inorganic Hybrid Metal Halide Perovskites

Liu,

Tang,

et al. 2024

Advanced Materials

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Organic–inorganic hybrid metal halide perovskites carrying strong spin‐orbital coupling (SOC) have demonstrated remarkable light‐emitting properties in spontaneous emission, amplified spontaneous emission (ASE), and circularly‐polarized luminescence (CPL). Experimental studies have shown that SOC plays an important role in controlling the light‐emitting properties in such hybrid perovskites. Here, the SOC consists of both orbital (L) and spin (S) momentum, leading to the formation of J (= L + S) excitons intrinsically involving orbital and spin momentum. In general, there are three issues in determining the effects of SOC on the light‐emitting properties of J excitons. First, when the J excitons function as individual quasi‐particles, the configurations of orbital and spin momentum directly decide the formation of bright and dark J excitons. Second, when the J excitons are mutually interacting as collective quasi‐particles, the exciton–exciton interactions can occur through orbital and spin momentum. The exciton–exciton interactions through orbital and spin momentum give rise to different light‐emitting properties, presenting SOC ordering effects. Third, the J excitons can develop ASE through coherent exciton–exciton interaction and CPL through exciton‐helical ordering effect. This review article discusses the SOC effects in spontaneous emission, ASE, and CPL in organic–inorganic hybrid metal halide perovskites.

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Spin‐Orbital Ordering Effects of Light Emission in Organic–Inorganic Hybrid Metal Halide Perovskites

Liu,

Tang,

et al. 2024

Advanced Materials

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Highly Luminescent Manganese‐Doped 2D Hybrid Perovskite Nanoplatelets with Dual Emissions Controlled Through Layer Thickness Modulation

Yadav,

Jang,

Samanta

et al. 2024

Advanced Optical Materials

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Doping semiconductor nanomaterials with manganese ion (Mn2+) introduce a well‐defined photoactive d‐d level within the band structure, paving the way for diverse applications. Although Mn doping in single‐layer 2D hybrid perovskites (n = 1) has been extensively studied, limited research has been conducted on doping with modulation of the layer thickness. Herein, Mn2+ doping in hybrid 2D perovskite nanoplatelets (NPLs), L2An‐1[Pb1‐xMnx]nBr3n+1 (where L = butylammonium, A = methylammonium), with variations in Mn concentration (x = 0–0.60) and layer thickness (n = 1–3) is reported. Substitutional doping of Mn significantly increases the photoluminescence quantum yield as well as the rate of energy transfer efficiency, which strongly depends on the layer thickness of NPLs. The Mn concentration in 2D NPLs determines the rate of forward and backward energy transfer. Low‐temperature emission spectra allow to determine thickness‐dependent exciton binding energy for Mn‐doped 2D NPLs (x = 0.5) with values of 410 ± 11 meV (n = 1), 188 ± 9 meV (n = 2), and 151 ± 17 meV (n = 3). The faster dissociation of band‐edge excitons into free carriers at Mn2+ sites results in high brightness with an excellent CRI of 89.2 for the white light‐emitting diode.

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Compositional study of borosilicate CsPbBr3 perovskite nanocrystals embedded glass for chemically stable white LEDs

Lee,

Gelija,

Kim

et al. 2024

J. Korean Ceram. Soc.

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Trends in defect passivation technologies for perovskite-based photosensor

Cited by 6 publications

References 117 publications

Spin‐Orbital Ordering Effects of Light Emission in Organic–Inorganic Hybrid Metal Halide Perovskites

Spin‐Orbital Ordering Effects of Light Emission in Organic–Inorganic Hybrid Metal Halide Perovskites

Highly Luminescent Manganese‐Doped 2D Hybrid Perovskite Nanoplatelets with Dual Emissions Controlled Through Layer Thickness Modulation

Compositional study of borosilicate CsPbBr3 perovskite nanocrystals embedded glass for chemically stable white LEDs

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