High-Performance organic photodiodes for Blue-Light hazard detection

Lu, Jong‐Hong; Jiang, Bing‐Huang; Hsiao, Fu-Chun; Peng, Yan‐Cheng; Su, Yu Wei; Lin, Yan‐Ru; Tsai, Tsung‐Han; Shiu, Ming‐Neng; Lin, Chwen-Yih; Fang, Yu-Ting; Chen, Chih‐Ping

doi:10.1016/j.cej.2022.135327

Cited by 29 publications

(16 citation statements)

References 53 publications

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“…IEICO-4F exhibited a (100) peak at 0.33 Å –1 ( d = 19.03 Å) in the in-plane direction and a (010) peak at 1.83 Å –1 in the out-of-plane direction, suggesting a face-on orientation and higher-order molecular packing related to its higher electron mobility. These characteristic peak positions are consistent with those reported in the literature . The blend film of PffBT4T-2OD:PC 71 BM displayed two (010) peaks at 1.76 Å –1 ( d = 5.57 Å) and 1.37 Å –1 ( d = 4.59 Å), representing the π-stacking distances of PffBT4T-2OD and PC 71 BM, respectively.…”

Section: Results and Discussionsupporting

confidence: 89%

“…We wished to realize a simple ternary strategy with which to employ IEICO-4F and its derivatives to realize outstanding NIR OPD performance. In our previous study, we found that our PffBT4T-2OD:PC 71 BM OPD exhibited an impressive value of J D and maintained a high value of R over the wavelength range from 350 to 750 nm. We suspected that the introduction of IEICO-4F might extend the photoresponse to 1000 nm while maintaining the performance of the PffBT4T-2OD:PC 71 BM OPD.…”

Section: Results and Discussionmentioning

confidence: 70%

“…Thus, for this present study, we evaluated inverted OPDs having the structure indium tin oxide (ITO)/ZnO/BHJ/MoO 3 /Ag (Figure d). To fabricate these OPDs, we prepared solutions of PffBT4T-2OD, PC 71 BM, and IEICO-4F in chlorobenzene/ o -dichlorobenzene at donor-to-acceptors (D/A 1 /A 2 ) ratios of 1:1.2:0, 1:1:0.2, 1:1:0.4, and 1:0.8:0.4 (10 mg mL –1 for the D component) and formed films having an optimized thickness of 400 nm . Notably, we could not construct the PffBT4T-2OD:IEICO-4F OPD because of poor film formation.…”

Section: Results and Discussionmentioning

confidence: 99%

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Highly Efficient Ternary Near-Infrared Organic Photodetectors for Biometric Monitoring

Jiang

Hsiao

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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Near-infrared (NIR) small-molecule acceptors that absorb at wavelengths of up to 1000 nm are attractive for applications in organic photodetectors (OPDs) and biometrics. In this study, we incorporated IEICO-4F as the third component for PffBT4T-2OD:PC 71 BM-based OPDs to provide an efficient NIR response while greatly suppressing the leakage current at reverse bias. By varying the blend ratio and thickness (250−600 nm), we obtained an NIR OPD displaying an ultralow dark-current density (J D = 2.62 nA cm −2 ), ultrahigh detectivity [D* = 7.2 × 10 12 Jones (850 nm)], high sensitivity, and photoresponsivity covering the region from the ultraviolet to the NIR. We used tapping-mode atomic force microscopy, optical microscopy, grazing-incidence wide-angle X-ray scattering, and contact angle measurements to investigate the effect of IEICO-4F on the performance of the ternary OPDs. The low compatibility of PffBT4T-2OD and IEICO-4F, originating from weak intermolecular interactions, allowed us to manipulate the degree of phase separation between the donor and acceptor in the ternary blends, leading to an optimized blend morphology featuring efficient charge separation, transport, and collection. To demonstrate its applicability, we integrated our OPD with two light-emitting diodes and used the system for precisely calculated transmissive pulse oximetry.

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Section: Results and Discussionsupporting

confidence: 89%

Section: Results and Discussionmentioning

confidence: 70%

Section: Results and Discussionmentioning

confidence: 99%

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Highly Efficient Ternary Near-Infrared Organic Photodetectors for Biometric Monitoring

Jiang

Hsiao

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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“…The large surface morphology low values of γ total of the NiO x / YLC systems (with the exception of NiO x / YLC-3 ) induced the growth of large-grained perovskites, thereby improving the performance of the resulting PSCs. Figure S22a displays the photoinduced charge carrier extraction in the linearly increasing voltage (photo-CELIV) curves of the NiO x – and NiO x / YLC-1(a) –derived devices . The faster carrier transport, calculated from the curves for the devices incorporating NiO x and NiO x / YLC-1(a) , were 2.4 and 3.3 × 10 –3 cm 2 V –1 s –1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Dual-Functional Enantiomeric Compounds as Hole-Transporting Materials and Interfacial Layers in Perovskite Solar Cells

Chiu

Kang

et al. 2022

ACS Appl. Mater. Interfaces

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In this paper, we describe the application of the enantiomeric compounds YLC-1−YLC-4, each featuring a bulky spiro[fluorene-9,9′-phenanthren]-10′-one moiety, as both hole-transporting materials (HTMs) and interfacial layers in both n−i−p and p−i−n perovskite solar cells (PSCs). These HTMs contain an enantiomeric mixture and a variety of core units linked to triarylamine donors to extend the degree of π-conjugation. The n−i−p PSCs incorporating YLC-1(a) exhibited a power conversion efficiency (PCE) of 19.15% under AM 1.5G conditions (100 mW cm −2 ); this value was comparable with that obtained using spiro-OMeTAD as the HTM (18.25%). We obtained efficient and stable p−i−n PSCs having the dopant-free structure indium tin oxide (ITO)/NiO x /interfacial layer (YLC)/perovskite/PC 61 BM/BCP/Ag. The presence of the spiro-based compounds YLC-1 and YLC-2 efficiently passivated the interfacial and grain boundary defects of the perovskite and enhanced the sizes of its grains, more so than did YLC-3 and YLC-4. These spiro-based YLC derivatives packed densely and functioned as Lewis bases to coordinate Pb and Ni ions in the perovskite and NiO x layers, respectively. Together, the effects of smaller grain boundaries and defect passivation of the perovskite enhanced the optoelectronic properties of the PSCs. The photoinduced charge carrier extraction in the linearly increasing voltage (photo-CELIV) curves of NiO x /YLC-1(a) showed the faster carrier transport 3.3 × 10 −3 cm 2 V −1 s −1 , which improved the carrier mobility, supporting the notion of defect passivation of the perovskite. The best-performing NiO x /YLC-1(a) device provided a short-circuit current density (J SC ) of 22.88 mA cm −2 , an open-circuit voltage (V OC ) of 1.10 V, and a fill factor (FF) of 80.93%, corresponding to an overall PCE of 20.37%. In addition, the PCEs of the NiO x /YLC-1(a) and NiO x /YLC-4(b) PSC devices underwent decays of only 98.1 and 97.0% of their original values after 41 days under an Ar atmosphere. Thus, these YLC derivatives passivated the NiO x surface and optimized the film quality of perovskites, thereby leading to superior PCEs of their respective PSCs.

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“…Excessive exposure to purple light may cause eye disease or chronobiological disorders. 20,21 Moreover, light pollution is becoming more and more serious due to the development of the excessive applications of architectural glass and artificial illumination. UV shielding is required highly to protect against the increasingly serious light pollution.…”

Section: Introductionmentioning

confidence: 99%

Narrowband photoresponse of a self-powered CuI/SrTiO₃ purple light detector with an ultraviolet-shielding effect

Zhang

Liu

et al. 2023

J. Mater. Chem. C

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High-Performance organic photodiodes for Blue-Light hazard detection

Cited by 29 publications

References 53 publications

Highly Efficient Ternary Near-Infrared Organic Photodetectors for Biometric Monitoring

Highly Efficient Ternary Near-Infrared Organic Photodetectors for Biometric Monitoring

Dual-Functional Enantiomeric Compounds as Hole-Transporting Materials and Interfacial Layers in Perovskite Solar Cells

Narrowband photoresponse of a self-powered CuI/SrTiO₃ purple light detector with an ultraviolet-shielding effect

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High-Performance organic photodiodes for Blue-Light hazard detection

Cited by 29 publications

References 53 publications

Highly Efficient Ternary Near-Infrared Organic Photodetectors for Biometric Monitoring

Highly Efficient Ternary Near-Infrared Organic Photodetectors for Biometric Monitoring

Dual-Functional Enantiomeric Compounds as Hole-Transporting Materials and Interfacial Layers in Perovskite Solar Cells

Narrowband photoresponse of a self-powered CuI/SrTiO3 purple light detector with an ultraviolet-shielding effect

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Narrowband photoresponse of a self-powered CuI/SrTiO₃ purple light detector with an ultraviolet-shielding effect