Dual-Phase CsPbCl3–Cs4PbCl6 Perovskite Films for Self-Powered, Visible-Blind UV Photodetectors with Fast Response

Chen, Dazheng; Deng, Minyu; Chen, Dazheng; Zhang, Zeyang; Chai, Wenming; Xi, He; Zhang, Chunfu; Hao, Yue

doi:10.1021/acsami.0c09910

Cited by 126 publications

(69 citation statements)

References 62 publications

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“…Since the dawn of civilization, solar energy has been hailed as one of the most promising renewable energy resources [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. By utilizing readily available materials and simple fabrication processes, thin-film technology promises to cut the cost of solar energy [15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Influence of Different Rotations of Organic Formamidinium Molecule on Electronic and Optical Properties of FAPbBr3 Perovskite

et al. 2021

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Hybrid organic–inorganic halide perovskites (HOIPs) have recently represented a material breakthrough for optoelectronic applications. Obviously, studying the interactions between the central organic cation and the Pb-X inorganic octahedral could provide a better understanding of HOIPs. In this work, we used a first-principles theoretical study to investigate the effect of different orientations of central formamidinium cation (FA+) on the electronic and optical properties of FAPbBr3 hybrid perovskite. In order to do this, the band structure (with and without spin–orbit coupling (SOC)), density of states (DOS), partial density of states (PDOS), electron density, distortion index, bond angle variance, dielectric function, and absorption spectra were computed. The findings revealed that a change in the orientation of FA+ caused some disorders in the distribution of interactions, resulting in the formation of some specific energy levels in the structure. The interactions between the inorganic and organic parts in different directions create a distortion index in the bonds of the inorganic octahedral, thus leading to a change in the volume of PbBr6. This is the main reason for the variations observed in the electronic and optical properties of FAPbBr3. The obtained results can be helpful in solar-cell applications.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Influence of Different Rotations of Organic Formamidinium Molecule on Electronic and Optical Properties of FAPbBr3 Perovskite

et al. 2021

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“…The general chemical formula for HIPs is ABX 3 , where A is a monovalent inorganic cation, similar to Cs + : cesium; X is a halogen anion including F − , I − , Br − , and Cl − , and B is a divalent metallic cation such as Pb 2+ , Sn 2+ , Cu 2+ , etc. [29][30][31][32][33][34][35][36][37][38][39][40][41][42]. Inorganic hybrid perovskites have a semiconducting nature.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: The Effect of Structural Phase Transitions on Electronic and Optical Properties of CsPbI3 Pure Inorganic Perovskites

et al. 2021

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Hybrid inorganic perovskites (HIPs) have been developed in recent years as new high-efficiency semiconductors with a wide range of uses in various optoelectronic applications such as solar cells and light-emitting diodes (LEDs). In this work, we used a first-principles theoretical study to investigate the effects of phase transition on the electronic and optical properties of CsPbI3 pure inorganic perovskites. The results showed that at temperatures over 300 °C, the structure of CsPbI3 exhibits a cube phase (pm3m) with no tilt of PbI6 octahedra (distortion index = 0 and bond angle variance = 0). As the temperature decreases (approximately to room temperature), the PbI6 octahedra is tilted, and the distortion index and bond angle variance increase. Around room temperature, the CsPbI3 structure enters an orthorhombic phase with two tilts PbI6 octahedra. It was found that changing the halogens in all structures reduces the volume of PbI6 octahedra. The tilted PbI6 octahedra causes the distribution of interactions to vary drastically, which leads to a change in band gap energy. This is the main reason for the red and blue shifts in the absorption spectrum of CsPbI3. In general, it can be said that the origin of all changes in the structural, electronic, and optical properties of HIPs is the changes in the volume, orientation, and distortion index of PbI6 octahedra.

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“…In addition, it is worth noticing that all-inorganic single junction devices offer interesting potential applications in high impact optoelectronics. Examples include photodetectors for gamma and X-rays detection, [107][108][109][110][111] scintillators, [112][113][114][115] photocatalysts, [116][117][118][119] and light emitting devices, [120][121][122][123] offering a plethora of new attractive solutions.…”

Section: Concluding Remarks and Future Perspectivesmentioning

confidence: 99%

All‐Inorganic Cesium‐Based Hybrid Perovskites for Efficient and Stable Solar Cells and Modules

Montecucco

Quadrivi

Pò

et al. 2021

Advanced Energy Materials

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high defect tolerance, long carrier diffusion length, and compatibility toward scalable manufacturing processes to name a few. [2][3][4][5][6][7] However, hybrid perovskites face severe degradation issues under operative conditions, which stem from the (photo) chemical instability when exposed to moisture, oxygen, UV light, and heat. [8][9][10][11][12] Among other reasons, the presence of the hydrophobic organic cation, e.g., methylammonium, can accelerate the degradation path. [12][13][14] For this reason, a greater focus has been devoted to exploring inorganic elements to replace the organic cations, for instance, using cesium to form CsPbX 3 all-inorganic perovskites. This system has been revealed of particular interest especially for the improved thermal stability of the material and, consequently, the enhanced device lifetime. [13] CsPbI 3 and CsPbBr 3 are the most studied materials within this class, with a rapid boost of their use for highly efficient solar cells, reaching 19.03% in 2019. [15] However, the PCE of CsPbX 3 -based devices are still lower than their organic-inorganic counterparts and far from the Shockley-Queisser limit calculated for their bandgap. [16] Therefore, major efforts are required to stabilize the CsPbI 3 structure and to fabricate high quality CsPbX 3 thin films, before upscaling the manufacturing toward marketable devices. In this work, we provide a compelling perspective on the most recent and innovative strategies to tackle this challenge. The structural and optoelectronic properties of CsPbX 3 materials are first sorted out, with a focus on the film morphology, crystal structure, and phase transitions of each system. Second, methods for improving the photovoltaic performances and the stability of CsPbX 3 -based devices are reported, focusing on the highest PCE and the longest device lifetimes reported up to date. Finally, we provide a perspective on the state of the art and future challenges for the upscaling of all-inorganic perovskite modules.

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Dual-Phase CsPbCl₃–Cs₄PbCl₆ Perovskite Films for Self-Powered, Visible-Blind UV Photodetectors with Fast Response

Cited by 126 publications

References 62 publications

RETRACTED: Influence of Different Rotations of Organic Formamidinium Molecule on Electronic and Optical Properties of FAPbBr3 Perovskite

RETRACTED: Influence of Different Rotations of Organic Formamidinium Molecule on Electronic and Optical Properties of FAPbBr3 Perovskite

RETRACTED: The Effect of Structural Phase Transitions on Electronic and Optical Properties of CsPbI3 Pure Inorganic Perovskites

All‐Inorganic Cesium‐Based Hybrid Perovskites for Efficient and Stable Solar Cells and Modules

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