Solution-processed photodetectors based on organic–inorganic hybrid perovskite and nanocrystalline graphite

Wang, Yan; Xia, Zhonggao; Du, Songnan; Yuan, Fang; Li, Zigang; Li, Zhenjun; Dai, Qing; Wang, Haolan; Luo, Shiqiang; Zhang, Shengdong; Zhou, Hang

doi:10.1088/0957-4484/27/17/175201

Cited by 43 publications

(49 citation statements)

References 35 publications

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“…lower resistance) quench the PL emission due to better charge transfer from the perovskite to the SWCNT. While no literature can be found on using SWCNTs within a perovskite matrix, this observation is consistent with results previously reported on perovskite photovoltaic devices using nanostructured carbon-based electrodes123. The pronounced PL quenching observed in our SWNT/perovskite films highlights the role of the carbon nanotube network as charge-carrier separator and extractor123.…”

Section: Resultssupporting

confidence: 92%

“…While no literature can be found on using SWCNTs within a perovskite matrix, this observation is consistent with results previously reported on perovskite photovoltaic devices using nanostructured carbon-based electrodes123. The pronounced PL quenching observed in our SWNT/perovskite films highlights the role of the carbon nanotube network as charge-carrier separator and extractor123. This enhanced charge collection in the hybrid films can be directly attributed to the increased interaction between the small perovskite nanocrystals and the embedded SWCNT network.…”

Section: Resultssupporting

confidence: 91%

“…Today, a proven strategy to procure better low cost materials is the combination of different nanomaterials1234567. Such hybrid nano-engineered materials are of great interest because they can often synergistically and controllably associate the advantageous physical, chemical and optical properties from each constituent to achieve better, novel and tunable functionalities234567.…”

mentioning

confidence: 99%

“…These advances have been transposed to perovskite-based photodetectors, where responsivities between 10 2 and 10 6 A.W −1 have been reported with various photodetector architectures341819. Very recently, a photoconducting-type device has been investigated using solution-processed graphite-perovskite hybrid as a photoactive material1. The dependence of the device performance with the channel length has been demonstrated.…”

mentioning

confidence: 99%

“…To demonstrate the enhanced capabilities of these hybrid nano-engineered films, we produced large-area (0.1 cm 2 ) and broadband photodetectors operating from 300 nm to 800 nm, with responsivities up-to 13.8 A.W −1 and response times as short as 10 ms, which is faster than most previous works on perovskite photodetectors1234. These spectacular performances stem from the synergetic contributions of the SWCNTs and the perovskite matrix to significantly improve the overall properties of the hybrid material compared to the bulk perovskite films.…”

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confidence: 99%

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High-performance nanotube-enhanced perovskite photodetectors

Gerlein

Nechache

et al. 2017

Sci Rep

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Organic-inorganic perovskites have already shown a tremendous potential for low-cost light-harvesting devices. Yet, the relatively low carrier mobilities in bulk perovskites still prevent large-area devices with performances competing with state-of-the-art technologies. Here, we tackle this fundamental challenge by incorporating single-wall carbon nanotubes within a perovskite matrix by means of a simple two-step method in ambient air. Using this nano-engineered hybrid film, we demonstrate large-area photodetectors with responsivities up-to 13.8 A.W−1 and a broad spectral response from 300 to 800 nm, indicating that photocurrent generation arises from the charge transfer from the perovskite matrix to the embedded nanotube network. As the nanotubes facilitate the carrier extraction, these photodetectors also show a fast response time of 10 ms. This is significantly faster than most of previous reports on perovskite-based photodetectors, including devices with much smaller photosensitive areas. This approach is also well-suited for large-scale production of other perovskite-based light-harvesting devices.

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Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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High-performance nanotube-enhanced perovskite photodetectors

Gerlein

Nechache

et al. 2017

Sci Rep

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Perovskite‐Based Phototransistors and Hybrid Photodetectors

Xie

Liu

Loi

et al. 2019

Adv Funct Materials

266

250

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In the past several years, organic-inorganic hybrid perovskites and all inorganic perovskites have attracted enormous research interest in a variety of optoelectronic applications including solar cells, light-emitting diodes, semiconductor lasers, and photodetectors for their plenty of appealing electrical and optoelectrical properties. Benefiting from the inherent amplification function of transistors and the pronounced photogating effect, perovskite-based phototransistors and hybrid photodetectors can provide very high photoresponsivity and gain, rendering them highly promising for some specific applications especially ultrasensitive light detection. A review on the recent progress of phototransistors and hybrid photodetectors using perovskites as light-sensitive materials is presented. The efforts and development in 3D and 2D perovskite-based phototransistors, and perovskite/functional material (e.g., graphene, 2D semiconductors, organic semiconductors, and other semiconductors) heterojunctionbased hybrid photodetectors are introduced and discussed systematically. Some processing techniques for optimizing device performance are also addressed. In the final section, a conclusion of the research achievements is presented and possible challenges as well as outlook are provided to guide future activity in this research field.

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