Time-resolved fluorescence anisotropy study of organic lead halide perovskite

Jiang, Yajie; Wen, Xiaoming; Benda, Aleš; Sheng, Rui; Ho‐Baillie, Anita; Huang, Shujuan; Huang, Fuzhi; Cheng, Yi‐Bing; Green, Martin A.

doi:10.1016/j.solmat.2016.03.002

Cited by 15 publications

(13 citation statements)

References 58 publications

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“…[24] As a result, these different transition bands of CBM along different directions created a preferred polarization due to the optical TDM within the band structure, leading to the linearly polarized PL emission of the MAPbI 3 . Jiang et al [60] observed anisotropic polarized luminescence in MAPbI 3 and MAPbI 3−x Cl x films with a polarization ratio of 0.17 and 0.14, respectively. While the MAPbBr 3 film was found to exhibit isotropic polarized luminescence because of the cubic crystal structure of MAPbBr 3 with high centrosymmetry at room temperature.…”

Section: Anisotropic Crystal Structurementioning

confidence: 99%

Polarization‐Sensitive Halide Perovskites for Polarized Luminescence and Detection: Recent Advances and Perspectives

et al. 2021

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While halide perovskites (HPs) have achieved enormous success in the field of optoelectronic applications, much attention has been recently drawn to the unique polarization sensitivity of HPs, either intrinsic or extrinsic, which makes HPs a potential candidate for innovative applications in directly polarized luminescence and detection. Herein, the research status in the field of polarization‐sensitive HPs, including linear polarization and circular polarization, is comprehensively summarized. To evaluate the effectiveness of HPs in generating and detecting linearly or circularly polarized light, the principles and characterization methods of polarized luminescence and detection are introduced. Sequentially, the state‐of‐the‐art development of the strategies that induce the linear or circular polarization characteristics of HPs is systematically reviewed, based on which the application of polarization‐sensitive HPs in the field of polarization luminescence and detection are summarized. Moreover, the current challenges and opportunities are discussed, and prospects of the future development in this promising field are outlined.

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Section: Anisotropic Crystal Structurementioning

confidence: 99%

Polarization‐Sensitive Halide Perovskites for Polarized Luminescence and Detection: Recent Advances and Perspectives

et al. 2021

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“…High-quality organic lead halide perovskites (CH 3 NH 3 PbI 3 , CH 3 NH 3 PbI 3− x Cl x , and CH(NH 2 ) 2 PbI 3 ), which can be fabricated using a two-step or a one-step spin-coating method [ 1 , 2 , 3 , 4 ], have been widely used as the light harvesting material in photovoltaic cells due to their high power conversion efficiency ( PCE ) and low-cost of fabrication. It is well known that the low absorption bandgap (<1.6 eV) [ 5 ], small exciton binding energy (2–70 meV) [ 6 , 7 , 8 , 9 ], long exciton lifetime (>10 ns) [ 10 , 11 , 12 ], high carrier mobility (>5 cm 2 /Vs) [ 13 , 14 ], and long carrier diffusion length (>1 μm) [ 15 , 16 ] of perovskite thin films are the reasons why high-performance photovoltaic cells can be realized. The first use of CH 3 NH 3 PbI 3 (MAPbI 3 ) as a light harvesting material deposited on top of a hydrophilic mesoporous TiO 2 film [ 17 ], resulted in a moderate PCE of 3.81% [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Overcoming the Intrinsic Difference between Hydrophilic CH3NH3PbI3 and Hydrophobic C60 Thin Films to Improve the Photovoltaic Performance

et al. 2017

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Dimethylformamide/dimethyl sulfoxide solvent mixtures were used as the CH3NH3PbI3 (MAPbI3) precursor solvent in a one-step spin coating method to fabricate smooth and hydrophilic crystalline MAPbI3 thin films on top of hydrophobic carbon-60 (C60) thin film for highly efficient photovoltaics. The structural, optical, and excitonic characteristics of the resultant MAPbI3 thin films were analyzed using X-ray diffraction (XRD), atomic-force microscopy, absorbance spectroscopy, photoluminescence (PL) spectrometry, and nanosecond time-resolved PL. There was a trade-off between the crystallinity and surface roughness of the MAPbI3 thin films, which strongly influenced the device performance of MAPbI3-based photovoltaics. The high power conversion efficiency (PCE) of 17.55% was achieved by improving the wettability of MAPbI3 precursor solutions on top of the C60 thin films. In addition, it was predicted that the fill factor and PCE could be further improved by increasing the crystallinity of the MAPbI3 thin film while keeping it smooth.

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“…(SRH) recombination and intrinsic electron-hole recombination, respectively, whereas the slow component (s 1 ) was linked to free electron-hole recombination. 62 As shown in Fig. 6 and Table 2, DD82-based and DMSO-based perovskites reveal the longest average time decays, which indicate the lower overall deep defects.…”

Section: Solvent Effects On Electronic Propertiesmentioning

confidence: 89%

Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films via solvent type

et al. 2019

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Time-resolved fluorescence anisotropy study of organic lead halide perovskite

Cited by 15 publications

References 58 publications

Polarization‐Sensitive Halide Perovskites for Polarized Luminescence and Detection: Recent Advances and Perspectives

Polarization‐Sensitive Halide Perovskites for Polarized Luminescence and Detection: Recent Advances and Perspectives

Overcoming the Intrinsic Difference between Hydrophilic CH3NH3PbI3 and Hydrophobic C60 Thin Films to Improve the Photovoltaic Performance

Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films via solvent type

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