Stacking‐Order‐Dependent Optoelectronic Properties of Bilayer Nanofilm Photodetectors Made From Hollow ZnS and ZnO Microspheres

Hu, Linfeng; Chen, Min; Shan, Wenze; Zhan, Tianrong; Liao, Meiyong; Fang, Xiaosheng; Hu, Xinhua; Wu, Limin

doi:10.1002/adma.201202749

Cited by 137 publications

(132 citation statements)

References 31 publications

(18 reference statements)

Supporting

Mentioning

129

Contrasting

Order By: Relevance

“…Also due to barrier height of NiO, it helps to block the photogenerated carriers to flow back and hence M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 12 prevents the recombination of e-h pairs [14]. The photoresponsivity (R) of the fabricated photodiodes is defined as the ratio of photocurrent to that of input power of the UV light source and calculated using the following relation [15,38,40] x 10 2 % and 1.87 x 10 3 % respectively. The detectivity (D) of the fabricated photodiodes is calculated using the following relation [15,40] M A N U S C R I P T…”

Section: Fabrication and Characterization Of Uv-photodiodesmentioning

confidence: 99%

Role of p-NiO electron blocking layers in fabrication of (P-N):ZnO/Al:ZnO UV photodiodes

Amiruddin

Kumar

2016

Current Applied Physics

View full text Add to dashboard Cite

Section: Fabrication and Characterization Of Uv-photodiodesmentioning

confidence: 99%

Role of p-NiO electron blocking layers in fabrication of (P-N):ZnO/Al:ZnO UV photodiodes

Amiruddin

Kumar

2016

Current Applied Physics

View full text Add to dashboard Cite

“…Moreover, in the structures of nanoshells, a well-ordered bilayer nanofilm utilizing wurtzite ZnS (≈3.7 eV, 340 nm) and ZnO (≈3.4 eV, 370 nm) hollow microspheres is also developed as active materials for the photodetectors. 46 Their photoresponsive properties are found to depend dominantly on the stacking orders of the hollow microspheres in the multilayer films. As shown in Figure 3h, when the ZnS shells are stacked on the top of ZnO shells, the WGM resonances are strong, owing to the lower refractive index of ZnO as compared to the one of ZnS.…”

Section: −52mentioning

confidence: 99%

“…Figure 3j illustrates the on/off switching of the bilayer device under UV irradiation at a bias of 5 V. All of the device time responses are highly stable and reproducible, and especially no degradation is observed in tens of switching cycles, indicating the excellent stability and fast response speed of the devices. 46 Light Management for PV Devices. Conventional Strategies for PV Device Light Management.…”

Section: −52mentioning

confidence: 99%

Light Management with Nanostructures for Optoelectronic Devices

Leung

Zhang

Xiu

et al. 2014

J. Phys. Chem. Lett.

165

115

View full text Add to dashboard Cite

Light management is of paramount importance to improve the performance of optoelectronic devices including photodetectors, solar cells, and light-emitting diodes. Extensive studies have shown that the efficiency of these optoelectronic devices largely depends on the device structural design. In the case of solar cells, threedimensional (3-D) nanostructures can remarkably improve device energy conversion efficiency via various light-trapping mechanisms, and a number of nanostructures were fabricated and exhibited tremendous potential for highly efficient photovoltaics. Meanwhile, these optical absorption enhancement schemes can benefit photodetectors by achieving higher quantum efficiency and photon extraction efficiency. On the other hand, low extraction efficiency of a photon from the emissive layer to outside often puts a constraint on the external quantum efficiency (EQE) of LEDs. In this regard, different designs of device configuration based on nanostructured materials such as nanoparticles and nanotextures were developed to improve the out-coupling efficiency of photons in LEDs under various frameworks such as waveguides, plasmonic theory, and so forth. In this Perspective, we aim to provide a comprehensive review of the recent progress of research on various light management nanostructures and their potency to improve performance of optoelectronic devices including photodetectors, solar cells, and LEDs. O ptoelectronic devices, such as photodetectors, solar cells, and light-emitting diodes (LEDs), are essentially light to electricity or vice versa energy conversion devices. Utilization of efficient optoelectronic devices cannot only produce clean energy but can also help with energy conservation. Recent extensive studies have shown that the efficiency of these optoelectronic devices largely depends on the device structural design. In the case of solar cells, which involve conversion from solar radiation to electricity, it has been discovered that nanostructures can remarkably improve the energy conversion efficiency via various light-trapping mechanisms. Therefore, a number of nanostructures including nanowires, nanopillars, nanoholes, and so forth were fabricated, and their effectiveness for photovoltaic (PV) performance improvement has been examined based on different material systems. Meanwhile, these optical absorption enhancement schemes can benefit photodetectors as well. It is worth pointing out that due to the different application scale requirement, low-cost approaches are desired for effective light management in PV applications. However, performance is the primary concern for photodetectors in most circumstances. On the other hand, a LED is a device that converts electrical energy to optical radiation. High quantum efficiency and photon extraction efficiency not only help energy conservation but also minimize the overheating of the device, thus prolonging its lifetime. In recent decades, numerous material systems and techniques were extensively studied to improve the internal quantum ...

show abstract

“…TiO 2 hollow sphere doping 9.4 mol% Ag has excellent antibacterial activities against scherichia coli, staphylococcus aurels and candida albicans at room temperature. Furthermore, hollow spheres with photocatalytic properties can be photoelectric detector [96].…”

Section: Other Applicationmentioning

confidence: 99%

Research Advances in Photocatalysis of Inorganic Hollow Spheres

Tian¹,

Hu²,

Xiao³

2014

WJNSE

View full text Add to dashboard Cite

Inorganic hollow spheres have shown their superiority in photocatalytic area due to the large specific surface area, controllable structure and their own special optical, electrical, magnetic properties. According to the classification of inorganic hollow spheres as photocatalysts, recent research progress and application status have been summarized in this paper. At last, the future developments of inorganic hollow spheres in photocatalytic field have been discussed.

show abstract

Stacking‐Order‐Dependent Optoelectronic Properties of Bilayer Nanofilm Photodetectors Made From Hollow ZnS and ZnO Microspheres

Cited by 137 publications

References 31 publications

Role of p-NiO electron blocking layers in fabrication of (P-N):ZnO/Al:ZnO UV photodiodes

Role of p-NiO electron blocking layers in fabrication of (P-N):ZnO/Al:ZnO UV photodiodes

Light Management with Nanostructures for Optoelectronic Devices

Research Advances in Photocatalysis of Inorganic Hollow Spheres

Contact Info

Product

Resources

About