Ultrafast, self-powered and charge-transport-layer-free photodetectors based on high-quality evaporated CsPbBr<sub>3</sub> perovskites for applications in optical communication

Liu, Xingyue; Li, Yong; Li, Junjie; Tan, Xianhua; Sun, Bo; Fang, Han; Xi, Shuang; Shi, Tielin; Tang, Zirong; Liao, Guanglan

doi:10.1039/c9tc06630f

Cited by 58 publications

(43 citation statements)

References 67 publications

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“…In addition, the response and recovery times are estimated to be 5 and 6 μs (defined as the time interval for the values to reach 90% and decrease to 10 % of the maximum amplitude, respectively). Notably, the response time and recovery times are comparable to those of outstanding fibre-shaped perovskite photodetectors and are also sufficient for text and audio transmission in optical communication systems 39,40 . As illustrated in Fig.…”

Section: Full-duplex Light Communication Based On the El-pd Bifunctiomentioning

confidence: 84%

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

et al. 2020

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Light fidelity (LiFi), which is emerging as a compelling technology paradigm shifting the common means of high-capacity wireless communication technologies, requires wearable and full-duplex compact design because of its great significance in smart wearables as well as the ‘Internet of Things’. However, the construction of the key component of wearable full-duplex LiFi, light-emitting/detecting bifunctional fibres, is still challenging because of the conflicting process between carrier separation and recombination, as well as the highly dynamic film-forming process. Here, we demonstrate light-emitting/detecting bifunctional fibres enabled by perovskite QDs with hybrid components. The hybrid perovskite inks endow fibres with super-smooth QD films. This, combined with the small exciton binding energy and high carrier mobility of perovskite QDs, enables successful integration of electroluminescence and photodetection into monofilaments. The bifunctional fibres possess the narrowest electroluminescence full width at half maximum of ~19 nm and, more importantly, the capability for simultaneously transmitting and receiving information. The successful fabrication of narrow emission full-duplex LiFi fibres paves the way for the fabrication and integration of low crosstalk interoperable smart wearables.

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Section: Full-duplex Light Communication Based On the El-pd Bifunctiomentioning

confidence: 84%

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

et al. 2020

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“…Although several reports on the sequential deposition of CsPbBr 3 perovskites can be found out in the literature, there have been limited reports on the fabrication of CsPbBr 3 photodetectors via sequential evaporation method. Liu et al [ 173 ] developed a sequential evaporation to prepare dense CsPbBr 3 photosensitive layer, which is well regulated than the conventional solution‐processing process. It was revealed that the evaporated films exhibited uniform coverage, higher crystallinity, phase purity, and light harvesting proficiency than the traditional solution‐processed counterparts.…”

Section: Dual‐source Evaporation Depositionmentioning

confidence: 99%

Evaporation Deposition Strategies for All‐Inorganic CsPb(I_1–xBr_x)₃Perovskite Solar Cells: Recent Advances and Perspectives

et al. 2021

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The preparation route has striking impacts on the morphology and photovoltaic performance of the solar cells, and the development of a feasible preparation strategy to make such a technology applicable to industry is of utmost significance. Compared with solution processing, the vapor deposition strategy has been demonstrated as an effective way to fabricate compact and uniform perovskite thin films with excellent versatility and controllability. While the vast majority of literature emphasizes solution processing as the deposition method for perovskite solar cells (PSCs), vapor‐deposited PSCs are closing the performance gap with numerous research reports of efficiencies above 20%. Thus, an in‐time review is critical to summarize the fundamentals of vapor‐based deposition strategies to evaluate their real potential and put challenges into perspective. Herein, various vapor deposition routes for the preparation of all‐inorganic perovskite films and solar cells are thoroughly addressed. Moreover, the critical factors such as deposition temperature, film thickness, substrate temperature, and annealing conditions that impact the film quality and photovoltaic performance of the perovskite are reviewed. In the end, conclusion and future possibilities of the vapor deposition processes are presented, which will offer constructive guidance for the large‐scale fabrication of solar cells.

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“…It is worth mentioning that a vertical HTL-free architecture was adopted for the fabrication of the ML-perovskite pressure sensor to simplify the device architecture and reduce the fabrication cost. Although the utilization of HTL in perovskite photodetectors have been demonstrated to be effective in increasing the photodetector performance, most HTL materials, such as 2,2′,7,7′-Tetrakis[N, N-di(4-Methoxyphenyl) Amino]-9,9′-spirobifluorene (Spiro-OMETAD), are expensive, which significantly increases the fabrication costs of the device [33][34][35]. The device fabrication was completed by thermal evaporation of the Au electrode on the perovskite layer [36][37][38].…”

Section: Device Architecturementioning

confidence: 99%

Performance Analysis of Embedded Mechanoluminescence-Perovskite Self-Powered Pressure Sensor for Structural Health Monitoring

et al. 2020

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Recent developments in sensing technologies have triggered a lot of research interest in exploring novel self-powered, inexpensive, compact and flexible pressure sensors with the potential for structural health monitoring (SHM) applications. Herein, we assessed the performance of an embedded mechanoluminescent (ML) and perovskite pressure sensor that integrates the physical principles of mechanoluminescence and perovskite materials. For a continuous in-situ SHM, it is crucial to evaluate the capabilities of the sensing device when embedded into a composite structure. An experimental study of how the sensor is affected by the embedment process into a glass fiber-reinforced composite has been conducted. A series of devices with and without ML were embedded within a composite laminate, and the signal responses were collected under different conditions. We also demonstrated a successful encapsulation process in order for the device to withstand the composite manufacturing conditions. The results show that the sensor exhibits distinct signals when subjected to different load conditions and can be used for the in-situ SHM of advanced composite structures.

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Ultrafast, self-powered and charge-transport-layer-free photodetectors based on high-quality evaporated CsPbBr₃ perovskites for applications in optical communication

Abstract: Ultrafast and self-powered photodetectors based on high-quality evaporated CsPbBr3 perovskites for applications in optical communication are demonstrated. The photodetectors achieve an ultrafast response time of 3.8 μs and on/off ratio of 3.5 × 104.

Cited by 58 publications

References 67 publications

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Evaporation Deposition Strategies for All‐Inorganic CsPb(I_1–xBr_x)₃Perovskite Solar Cells: Recent Advances and Perspectives

Performance Analysis of Embedded Mechanoluminescence-Perovskite Self-Powered Pressure Sensor for Structural Health Monitoring

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Ultrafast, self-powered and charge-transport-layer-free photodetectors based on high-quality evaporated CsPbBr3 perovskites for applications in optical communication

Abstract: Ultrafast and self-powered photodetectors based on high-quality evaporated CsPbBr3 perovskites for applications in optical communication are demonstrated. The photodetectors achieve an ultrafast response time of 3.8 μs and on/off ratio of 3.5 × 104.

Cited by 58 publications

References 67 publications

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Evaporation Deposition Strategies for All‐Inorganic CsPb(I1–xBrx)3Perovskite Solar Cells: Recent Advances and Perspectives

Performance Analysis of Embedded Mechanoluminescence-Perovskite Self-Powered Pressure Sensor for Structural Health Monitoring

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Ultrafast, self-powered and charge-transport-layer-free photodetectors based on high-quality evaporated CsPbBr₃ perovskites for applications in optical communication

Evaporation Deposition Strategies for All‐Inorganic CsPb(I_1–xBr_x)₃Perovskite Solar Cells: Recent Advances and Perspectives