High performance photodiode based on MoS2/pentacene heterojunction

Peng, Yingquan; Ding, Rongzheng; Ren, Qiang; Xu, Sunan; Sun, Lei; Wang, Ying; Lu, Feiping

doi:10.1016/j.apsusc.2018.07.197

Cited by 30 publications

(9 citation statements)

References 48 publications

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“…As an important parameter of photodetectors, the photoresponsivity ( R ) is defined as the value of the photocurrent ( I ph ) which generated in the external circuit under illumination of unit incident optical power ( P in ), that is [ 39 ] …”

Section: Resultsmentioning

confidence: 99%

Significant Detectivity Enhancement of Broad Spectral Organic–Inorganic Hybrid Photodiodes by C60 Film as Hole-Blocking Layer

et al. 2022

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As an important classification of photodetectors, broad spectral photodiodes are ubiquitous in the fields of industry and scientific research. Here, we reported a type of broad spectral organic–inorganic hybrid photodiodes (OIHPDs) based on planar-bulk heterojunction, which composed of 3,4,9,10-perylenetertracarboxylic dianhydride (PTCDA), copper phthalocyanine (CuPc) and fullerene (C60). In our research, the dark current of the OIHPD with 10 nm C60 film (10 nm-C60 OIHPD) was as low as 25.6 μA, which is about 63 times smaller than the dark current of the OIHPD without C60 film (C60-free OIHPD). It is considered that the significantly enhanced performance of 10 nm-C60 OIHPD is attributed to the introduction of the C60 film, which act as hole-blocking layer to reduce the dark current. And through the schematic energy level model combined with experimental measurements, the reason for the dark current change was well explained. Furthermore, the specific detectivity of 10 nm-C60 OIHPD was almost one order of magnitude larger than it of C60-free OIHPD, and a notable enhancement of over 1011 cm Hz1/2/W was obtained due to the fiercely reduced dark current. These results provide insights on how to improve the performance of organic photodiodes.

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Section: Resultsmentioning

confidence: 99%

Significant Detectivity Enhancement of Broad Spectral Organic–Inorganic Hybrid Photodiodes by C60 Film as Hole-Blocking Layer

et al. 2022

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“…134,146,147 Such an extended charge recombination time can improve the quantum efficiency of optoelectronic devices such as diodes, bipolar transistors, photodiodes, and so on. [148][149][150] Applications. COVID-19 sensors, TENGs, multifunctional optoelectronic devices, and memory and neuromorphic devices are some of the applications discussed here.…”

Section: Functionalizationmentioning

confidence: 99%

Atomic and structural modifications of two-dimensional transition metal dichalcogenides for various advanced applications

et al. 2022

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“…Photodetectors that convert incident light into electrical signals have been applied in many electronic systems, including in optical communications, bioimaging, and security fields. − However, the complicated manufacturing, poor flexibility, and low coefficient of conventional detectors based on inorganic semiconductors (Si, Ge, and GaInAs) hamper their widespread use. − Solution-processed organic photodetectors (OPDs) with organic layers on the order of nanometers have received tremendous attention due to their advantages of low cost, light weight, flexibility, and simple fabrication. − In particular, photomultiplication-type (PM-type) OPDs with external quantum efficiencies (EQEs) greater than 100% show excellent weak light detection ability . The EQE at 620 nm of PM-type OPDs based on poly(3-hexylthiophene)/[6,6]-phenylC61-butyric acid methyl ester (PCBM) reached 1250% under a −10 V applied voltage .…”

Section: Introductionmentioning

confidence: 99%

Transfer-Printed Nanoscale Poly(3-hexylthiophene-2,5-diyl) Layers for Organic Photodetectors

Zhou

Zhao

et al. 2021

ACS Appl. Nano Mater.

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Solution-processed organic photodetectors (OPDs) with organic layers on the order of nanometers have received tremendous attention due to their advantages of low cost, light weight, flexibility, and simple fabrication. The relatively high dark current, which is ascribed to the inherent properties of the bulk heterojunction structure, limits further promotion of OPDs. In this work, we performed a systematic investigation on transfer printing technology (TPT) based on different electron blocking layers (EBLs) and active layers. We demonstrated that the surface morphology of transfer-printed layers determines the performance of OPDs. Compared with PBDB-T and MEH-PPV, a smooth and compact P3HT layer can be obtained by TPT. The results demonstrated that in addition to the energy level or absorption spectrum of the material, the mechanical property that the surface remains smooth after transfer printing needs to be added as a selection criterion for transfer-printed EBLs. The dark current was reduced by approximately 2 orders of magnitude compared with that of the OPD without an EBL based on three different active layers (including fullerene and nonfullerene systems), while comparable photocurrents were obtained. Consequently, a similar responsivity (R), an improved specific detectivity (D*), and an enlarged linear dynamic range for OPDs were observed with the insertion of transfer-printed P3HT. Finally, the effect of transfer printing on the photoresponse time was investigated, and the results demonstrated that transfer-printed EBLs slightly increased the photoresponse time of OPDs.

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High performance photodiode based on MoS2/pentacene heterojunction

Cited by 30 publications

References 48 publications

Significant Detectivity Enhancement of Broad Spectral Organic–Inorganic Hybrid Photodiodes by C60 Film as Hole-Blocking Layer

Significant Detectivity Enhancement of Broad Spectral Organic–Inorganic Hybrid Photodiodes by C60 Film as Hole-Blocking Layer

Atomic and structural modifications of two-dimensional transition metal dichalcogenides for various advanced applications

Transfer-Printed Nanoscale Poly(3-hexylthiophene-2,5-diyl) Layers for Organic Photodetectors

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