Prospects of colour selective organic photodiodes

Yoon, Seongwon; Sim, Kyu Min; Chung, Dae Sung

doi:10.1039/c8tc04371j

Cited by 46 publications

(62 citation statements)

References 104 publications

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“…The device containing ITIC‐4F achieves 229 mA W −1 and mainly absorbs above 600 up to 800 nm, reaching the NIR wavelength window. The respective responsivities are comparable or even outmatch previously demonstrated color‐selective photodiodes based on organic or perovskite active layers demonstrating the potential of these nonconventional BHJ systems (see Table S1 in the Supporting Information) 6. A photograph of the inkjet‐printed multicolor array with “red” and “blue” OPDs is shown in the inset of Figure 1b.…”

Section: Figuresupporting

confidence: 80%

“…In the scope of multichannel communication, high requirements in terms of spectral selectivity should be met in addition to a fabrication route compatible with future mobile and wearable devices based on lightweight and flexible electronics. Organic photodiodes (OPDs) are particularly well suited for this purpose since the synthetic flexibility of the materials can be exploited to tailor a specific device figure of merit such as their spectral selectivity 5–10. Very recently, this energetic tunability allowed record efficiencies of 26% for indoor light harvesting to be reached 11.…”

Section: Figurementioning

confidence: 99%

“…Organic photodiodes (OPDs) are particularly well suited for this purpose since the synthetic flexibility of the materials can be exploited to tailor a specific device figure of merit such as their spectral selectivity. [5][6][7][8][9][10] Very recently, this energetic tunability allowed record efficiencies of 26% for indoor light harvesting to be reached. [11] Additionally, their processability via printing techniques enables high-throughput additive manufacturing on thin and mechanically flexible substrates with full freedom of design.…”

mentioning

confidence: 99%

“…The respective responsivities are comparable or even outmatch previously demonstrated color-selective photodiodes based on organic or perovskite active layers demonstrating the potential of these nonconventional BHJ systems (see Table S1 in the Supporting Information). [6] A photograph of the inkjet-printed multicolor array with "red" and "blue" OPDs is shown in the inset of Figure 1b. The blue and red colors of the devices originate from the respective red and blue light absorption of PIF:ITIC-4F and PIF:IDFBR.…”

mentioning

confidence: 99%

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Color‐Selective Printed Organic Photodiodes for Filterless Multichannel Visible Light Communication

et al. 2020

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Future lightweight, flexible, and wearable electronics will employ visible‐light‐communication schemes to interact within indoor environments. Organic photodiodes are particularly well suited for such technologies as they enable chemically tailored optoelectronic performance and fabrication by printing techniques on thin and flexible substrates. However, previous methods have failed to address versatile functionality regarding wavelength selectivity without increasing fabrication complexity. This work introduces a general solution for printing wavelength‐selective bulk‐heterojunction photodetectors through engineering of the ink formulation. Nonfullerene acceptors are incorporated in a transparent polymer donor matrix to narrow and tune the response in the visible range without optical filters or light‐management techniques. This approach effectively decouples the optical response from the viscoelastic ink properties, simplifying process development. A thorough morphological and spectroscopic investigation finds excellent charge‐carrier dynamics enabling state‐of‐the‐art responsivities >102 mA W−1 and cutoff frequencies >1.5 MHz. Finally, the color selectivity and high performance are demonstrated in a filterless visible‐light‐communication system capable of demultiplexing intermixed optical signals.

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Section: Figuresupporting

confidence: 80%

Section: Figurementioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Color‐Selective Printed Organic Photodiodes for Filterless Multichannel Visible Light Communication

et al. 2020

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“…This review is motivated by the need for an up-to-date assessment of this rapidly growing research area, particularly with respect to photoconversion efficiency and spectral width, which are central to narrowband functionality. While recent reviews on organic and perovskite narrowband photodetection have captured a broad view of the area [19][20][21], the present article pursues a focused approach aiming at the identification of the general trends associated with photoconversion efficiency and spectral width. Indeed, the growing body of literature poses significant challenges to attempts at comparing photoconversion efficiency and spectral width figures achieved with different materials and device solutions, especially due to the inherently heterogeneous nature of the reported performance data.…”

Section: Introductionmentioning

confidence: 99%

Efficiency and spectral performance of narrowband organic and perovskite photodetectors: a cross-sectional review

Pecunia

2019

J. Phys. Mater.

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The capability of detecting visible and near infrared light within a narrow wavelength range is in high demand for numerous emerging application areas, including wearable electronics, the Internet of Things, computer vision, artificial vision and biosensing. Organic and perovskite semiconductors possess a set of properties that make them particularly suitable for narrowband photodetection. This has led to rising interest in their use towards such functionality, and has driven remarkable progress in recent years. Through a comparative analysis across an extensive body of literature, this review provides an up-to-date assessment of this rapidly growing research area. The transversal approach adopted here focuses on the identification of: (a) the unifying aspects underlying organic and perovskite narrowband photodetection in the visible and in the near infrared range; and (b) the trends relevant to photoconversion efficiency and spectral width in relation to material, device and processing strategies. A cross-sectional view of organic and perovskite narrowband photodetection is thus delineated, giving fresh insight into the status and prospects of this research area.

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End‐Group Functionalization of Non‐Fullerene Acceptors for High External Quantum Efficiency over 150 000% in Photomultiplication Type Organic Photodetectors

Yoon

Lee

Sim

et al. 2020

Adv Funct Materials

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Photomultiplication‐type organic photodetectors (PM‐OPDs) with high external quantum efficiency (EQE) of over 100% are attracting increasing attention due to their potential importance in detecting weak incident light. Considering that the gain of PM‐OPD is determined by the ratio of carrier lifetime over carrier transit time, a systematic study on the effect of the end‐functionalization of a new extended aromatic fused‐ring non‐fullerene acceptor (NFA) on the carrier trap/transit time of the PM‐OPD. Photophysical analyses by means of ultraviolet‐visible absorption, ultraviolet photoelectron spectroscopy, and photoluminescence combined with structural analyses through grazing‐incidence wide‐angle X‐ray scattering show that fluorination of the NFA with the deepest lowest unoccupied molecular orbital level and non‐isotropic molecular ordering can yield the longest carrier lifetime. Furthermore, surface energy study show that fluorination of the NFA can also yield the most hydrophobic nature, which can allow the most efficient injection barrier thinning/lowering of the active layer/cathode interface under illumination due to the localized acceptor distribution toward cathode, maximizing the hole injection efficiency from cathode. As a result, an unprecedentedly high EQE of 156 000% is obtained from the optimized PM‐OPD. This work shows the importance of the molecular design of acceptor molecules in fabricating high‐performance PM‐OPDs.

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Prospects of colour selective organic photodiodes

Abstract: A summary of color selective organic photodiodes in accordance with various color selection mechanisms is presented.

Cited by 46 publications

References 104 publications

Color‐Selective Printed Organic Photodiodes for Filterless Multichannel Visible Light Communication

Color‐Selective Printed Organic Photodiodes for Filterless Multichannel Visible Light Communication

Efficiency and spectral performance of narrowband organic and perovskite photodetectors: a cross-sectional review

End‐Group Functionalization of Non‐Fullerene Acceptors for High External Quantum Efficiency over 150 000% in Photomultiplication Type Organic Photodetectors

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