Type-II BiVO4/Ni3(hexahydroxytriphenylene)2 heterojunction photoanodes for effective photoelectrochemical reaction

Yoon, Jung-In; Jo, Young‐Moo; Lee, Jong Heun

doi:10.1039/d2ya00008c

Cited by 6 publications

(9 citation statements)

References 39 publications

(51 reference statements)

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“…The supreme performance of the ZnO/Ni-CAT-based PD can be further explained by the energy band diagrams, which are illustrated in Figure . The work functions (WFs, ϕ) of n-type ZnO, p-type Ni-CAT, Au electrode, and Ag electrode are 4.0, 5.0, 5.1, and 4.26 eV, respectively. , The band gap of n-type ZnO and p-type Ni-CAT are 3.31 and 2.68 eV, respectively. , (Figure a,c). For ZnO/Ni-CAT-0 based PDs, the ZnO can absorb photogenerated holes due to the BEF ( V bi ) generated at the Schottky junction of the Au/ZnO and Ag/ZnO interface.…”

Section: Resultsmentioning

confidence: 96%

“…The work functions (WFs, ϕ) of ntype ZnO, p-type Ni-CAT, Au electrode, and Ag electrode are 4.0, 5.0, 5.1, and 4.26 eV, respectively. 22,39 The band gap of ntype ZnO and p-type Ni-CAT are 3.31 and 2.68 eV, respectively. 22,39 (Figure 5a,c).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…22,39 The band gap of ntype ZnO and p-type Ni-CAT are 3.31 and 2.68 eV, respectively. 22,39 (Figure 5a,c). For ZnO/Ni-CAT-0 based PDs, the ZnO can absorb photogenerated holes due to the BEF (V bi ) generated at the Schottky junction of the Au/ZnO and Ag/ZnO interface.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…17 Establishing the built-in electric field (BEF) of heterojunction can efficiently promote the separation of photogenerated charges and fabricate self-powered PDs by harvest- . 22 Several works have been researched on metal oxides as the template for bottom-up selfassembly MOFs. For example, Zhan et al 23 reported ZnO@ ZIF-8 core−shell heterostructures by the self-template method.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Establishing the built-in electric field (BEF) of heterojunction can efficiently promote the separation of photogenerated charges and fabricate self-powered PDs by harvesting energy from light irradiation. − Meanwhile, the in situ growth of heterojunctions provides the possibility to enhance the interface interconnection and facilitate the transportation of carriers . Thus, n-type ZnO, as a widely used photo-sensing material with a work function of 4.0 eV and a band gap of 3.31 eV, is selected as a template for in situ growth p-type nickel hexahydroxytriphenylene [Ni 3 (HHTP) 2 , Ni-CAT; work function, 5.0 eV; band gap, 2.68 eV] . Several works have been researched on metal oxides as the template for bottom-up self-assembly MOFs.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Fast and High-Performance Self-Powered Photodetector Based on the ZnO/Metal–Organic Framework Heterojunction

Wang

Liu

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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Electrical conductive metal−organic frameworks (EC-MOFs) are emerging as an appealing class of highly tailorable electrically conducting materials with potential applications in optoelectronics. Here, we in situ grew nickel hexahydroxytriphenylene (Ni-CAT) on the surface of ZnO nanorods (NRs). The selfpowered photodetectors (PDs) were fabricated with heterojunctions formed at the interface of ZnO NRs and Ni-CAT. With this, the built-in electric field (BEF) can effectively separate the photogenerated electron−hole pairs and enhance the photoresponse. We observe that the PDs based on hybrid ZnO/Ni-CAT with 3 h of growth time (ZnO/Ni-CAT-3) show good photoresponse (137 μA/W) with the fast rise (3 ms) and decay time (50 ms) under 450 nm light illumination without biased voltage. This work provides a facile and controllable method for the growth of the ZnO/Ni-CAT heterojunction with an effective BEF zone, which will benefit their optoelectronic applications.

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Section: Resultsmentioning

confidence: 96%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fast and High-Performance Self-Powered Photodetector Based on the ZnO/Metal–Organic Framework Heterojunction

Wang

Liu

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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A flexible transparent graphene/metal–organic framework complex hybrid chemical sensor for highly sensitive ethanol detection

Kim,

Choi,

Song

et al. 2024

EcoMat

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High‐performance flexible and transparent chemical sensors are key to achieving wearable electronics. Graphene with high transmittance and electrical properties is a suitable material for flexible and transparent chemical sensors. However, graphene has low detectivity to chemical substances. Here, we report hybrid chemical sensors fabricated by introducing a highly flat and smooth metal–organic framework (MOF) on graphene. The graphene chemical sensors functionalized with MOF on SiO2/Si wafer exhibit 22 times higher sensitivity of 6.07 μA ppm−1 in detecting ethanol than that of pristine graphene transistors of 0.28 μA ppm−1 and a low detection limit of 1 ppm. Furthermore, a flexible transparent 7 × 7 chemical sensor array exhibits great driving stability after the bending cycles of 105 at a bending radius of 1.0 mm and shows sensitivity of 0.11 μA ppm−1. Our findings demonstrate an efficient way to improve the chemical sensing ability of graphene for application in wearable chemical sensors.image

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Rational design an oval heterostructure and tight linking interface of ZnS@CdS(3) for sensitively photoelectrochemical bioanalysis of PSA

Zheng,

Zhang,

Zhang

et al. 2024

Journal of Alloys and Compounds

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Type-II BiVO₄/Ni₃(hexahydroxytriphenylene)₂ heterojunction photoanodes for effective photoelectrochemical reaction

Abstract: Semiconducting M3(hexahydroxytriphenylene)2 (M = Ni, Co, Cu; hexahydroxytriphenylene (HHTP)) was uniformly coated onto BiVO4 thin films via a facile solvothermal process, and the photoelectrochemical performance of the BiVO4/M3(HHTP)2 photoanodes was...

Cited by 6 publications

References 39 publications

Fast and High-Performance Self-Powered Photodetector Based on the ZnO/Metal–Organic Framework Heterojunction

Fast and High-Performance Self-Powered Photodetector Based on the ZnO/Metal–Organic Framework Heterojunction

A flexible transparent graphene/metal–organic framework complex hybrid chemical sensor for highly sensitive ethanol detection

Rational design an oval heterostructure and tight linking interface of ZnS@CdS(3) for sensitively photoelectrochemical bioanalysis of PSA

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