High‐Performing Quasi‐2D Perovskite Photodetectors with Efficient Charge Transport Network Built from Vertically Orientated and Evenly Distributed 3D‐Like Phases

Li, Bolun; Huang, Xi; Wu, Xiang; Zuo, Qiong; Cao, Yunhao; Zhu, Qi; Li, Yaohui; Xu, Yuanhuan; Zheng, Guanhaojie; Chen, Dongcheng; Zhu, Xu‐Hui; Huang, Fei; Zhen, Hongyu; Hou, Lintao; Qing, Jian; Cai, Wanzhu

doi:10.1002/adfm.202300216

Cited by 10 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The device maintains ≈ 90% of the initial current after 85 days (≈2000 h), while the TEA-based device maintains just about 50% (shown in Figure S18). The performance parameters of the most recent 2D/quasi-2D perovskite photodetectors are listed in Table S2. ,− ,, Our device performance shows an improved stability and fast response speed. The responsivity and detectivity are comparable with those of other 2D/quasi-2D perovskite photodetectors.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

2D/3D Perovskite Photodetectors with High Response Frequency and Improved Stability Based on Thiophene-2-ethylamine and Dual Additives

Jiang

Dong

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Organic−inorganic lead halide perovskite materials have received great attention in recent years. However, the poor stability of these materials severely limits the commercial application of perovskite devices. Here, we used thiophene-2ethylammonium iodide (TEAI) material as the organic spacer NH 4 SCN and NH 4 Cl as the dual additives to realize high-stability two-dimensional (2D)/three-dimensional (3D) perovskite thin films for perovskite photodetectors. Then, we investigated different effects of the dual additives on the orientation and crystallinity of the perovskite films. At room temperature, the optimized 2D/3D perovskite photodetectors exhibit good performance with high external quantum efficiency (EQE) (72%), large responsivity (0.36 A/W), high detectivity (2.46 × 10 12 Jones at the bias of 0 V), high response frequency (1.7 MHz), and improved stability (retains 90% photocurrent after 2000 h storage in RT and 10% RH conditions). Based on these devices, a dual-channel optical transport system and a light-intensity adder are achieved. The results of this study indicate that, with a simple process, the TEAI and dualadditives based 2D/3D perovskite photodetectors have promising applications in light-intensity adder and optical communication systems.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The performance parameters of the most recent 2D/quasi-2D perovskite photodetectors are listed in Table S2. 9,[13][14][15]20,47 Our device performance shows an improved stability and fast response speed. The responsivity and detectivity are comparable with those of other 2D/quasi-2D perovskite photodetectors.…”

Section: R Jmentioning

confidence: 99%

2D/3D Perovskite Photodetectors with High Response Frequency and Improved Stability Based on Thiophene-2-ethylamine and Dual Additives

Jiang

Dong

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Bifunctional Bidentate Organic Additive toward High Brightness Pure Red Quasi‐2D Perovskite Light‐Emitting Diodes

Rui,

Wu,

Qiu

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Quasi‐2D perovskites have attracted extraordinary attention for applications in solution‐processable light‐emitting diodes (LEDs). However, the performance of quasi‐2D perovskite LEDs (PeLEDs) is limited by the wide n phases distribution and the inevitable defects in the emitting films. Herein, a novel bidentate organic molecule ethyl thiooxamate (ETO) with two different electron‐rich functional moieties (C═O and C═S) as an additive is introduced in antisolvent ethyl acetate (EA) to achieve high quality quasi‐2D perovskite (PEA2CsPb2I7) films. The unsaturated Pb defects caused by iodine vacancy (VI) and Pb‐I (PbI) antisite can be simultaneously passivated though the synergistic action of the C═O and C═S moieties. Meanwhile, suppressing the formation of large n phases results in a more concentrated n phases distribution and improves the cascade energy transfer for boosting the excitons’ radiative recombination. As a result, the fabricated 656 nm pure red PeLEDs show a high maximum luminance of 6483 cd m−2 and a high peak external quantum efficiency of 20.73% with a CIE coordinate of (0.705, 0.293). The optimal device exhibits the superior performances to the reported red quasi‐2D PeLEDs at ≈640–690 nm. This work provides a guidance for rational designing of multidentate organic molecules toward high performance quasi‐2D PeLEDs.

show abstract

Toward High‐Performance Photodetectors Based on Quasi‐2D Ruddlesden‐Popper Mixed‐n Perovskite Nanomaterials

Malani S,

Klein,

Lesyuk

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

The excellent optoelectronic properties, straightforward synthesis, and robust material stability of quasi‐2D metal halide perovskites have made them a hot research topic for optoelectronic devices. In layered organic–inorganic perovskites, the optoelectronic properties are greatly influenced by morphology and quantum confinement, which are crucial for their photodetection performance and offer an excellent tunability tool. Here the optoelectronic properties and photodetection performance of quasi‐2D methylammonium lead bromide perovskites with three different morphologies nanoplatelets, nanosheets, and nanostripes produced by colloidal hot injection technique are investigated. The structural and optical characterization reveals the mixed‐n phases with varying extents of confinement. The study shows that nanostripes with the weak confinement effect exhibit superior photodetection performance. They demonstrate the highest photoresponsivity (R), external quantum efficiency (EQE), and detectivity (D) of 183 mA W−1, 56% and 2.9 × 1011 Jones respectively. They also show the highest on/off ratio and fastest photoresponse (rise time (τr) = 3.4 and fall time (τf) = 4.3 ms) in comparison to nanoplatelets and nanosheets. The study will aid in realizing an inexpensive high‐performance photodetector based on nanoparticles of quasi‐2D perovskites.

show abstract

High‐Performing Quasi‐2D Perovskite Photodetectors with Efficient Charge Transport Network Built from Vertically Orientated and Evenly Distributed 3D‐Like Phases

Cited by 10 publications

References 45 publications

2D/3D Perovskite Photodetectors with High Response Frequency and Improved Stability Based on Thiophene-2-ethylamine and Dual Additives

2D/3D Perovskite Photodetectors with High Response Frequency and Improved Stability Based on Thiophene-2-ethylamine and Dual Additives

Bifunctional Bidentate Organic Additive toward High Brightness Pure Red Quasi‐2D Perovskite Light‐Emitting Diodes

Toward High‐Performance Photodetectors Based on Quasi‐2D Ruddlesden‐Popper Mixed‐n Perovskite Nanomaterials

Contact Info

Product

Resources

About