Abstract Semiconductor‐based photodetectors (PDs) convert light signals into electrical via the photoelectric effect, which involves generation, separation, and transportation of photoinduced charge carriers, as well extraction these carriers to external circuits. Because their specific electronic optoelectronic properties, metal oxide semiconductors are widely used building blocks in devices. However, compromise between enhancing photoresponse reducing rise/decay times limits practical...

A novel self-powered UV photodetector based on electrospun ZnO nanofiber arrays is introduced. Aligned pure nanofibers and Ag-doped p-type are processed perpendicular to each other, p-n junction of fabricated as a result. Owing the intrinsic intervals between nanofibers, device fully transparent quartz substrate. Various characterization methods including TEM, XRD, XPS used testify existence form Ag element in field effect transistor constructed judge their conductivity. It discovered that...

Abstract BiOCl nanosheets/TiO 2 nanotube arrays heterojunction UV photodetector (PD) with high performance is fabricated by a facile anodization process and an impregnation method. The at the interface internal electric fields in nanosheets faciliate separation of photogenerated charge carriers regulate transportation electrons. Compared large dark current (≈10 −5 A), low on/off ratio (8.5), slow decay time (>60 s) TiO PD, optimized PD (6‐BiOCl–TiO ) yields dramatically decreased (≈1 nA),...

Hierarchically porous nitrogen‐doped carbon (HPC)/polyaniline (PANI) nanowire arrays nanocomposites are synthesized by a facile in situ polymerization. 3D interconnected honeycomb‐like HPC was prepared cost‐effective route via one‐step carbonization using urea and alkali‐treated wheat flour as precursor with high specific surface area (1294 m 2 g −1 ). The capacitances of HPC/PANI (with 923 ) electrode 383 1080 F 1 H SO 4 , respectively. Furthermore, an asymmetric supercapacitor based on...

A high sensitivity self-powered solar-blind photodetector is successfully constructed based on the polyaniline/MgZnO bilayer. The maximum responsivity of 160 μA W-1 at 250 nm under 0 V bias. device also exhibits a on/off ratio ≈104 illumination relatively weak light intensity 130 μW cm-2 without any power.

Abstract Developing efficient and affordable catalysts is of great significance for energy environmental sustainability. Heterostructure photocatalysts exhibit a better performance than either the parent phases as it changes band bending at interfaces provides driving force carrier separation, thus mitigating effects recombination back‐reaction. Herein, photo/electrochemical applications variety metal sulfides (MS x ) (MoS 2 , CdS, CuS, PbS, SnS ZnS, Ag S, Bi S 3 In )/TiO heterojunctions are...

A gold-induced NH4Cl-assisted vapor-based route is proposed and developed to achieve vertically aligned submicron Se crystals on lattice-matched (111)-oriented silicon substrates, based which a high-performance large-area silicon-compatible photodetector constructed. Thanks the energy band structure strongly asymmetrical depletion region, fabricated Se/Si device maintains similar wavelength cutoff that of selenium devices before IR along with broadband photoresponse in UV-to-visible region....

A feasible strategy for hybrid photodetector by integrating an array of self‐ordered TiO 2 nanotubes (NTs) and selenium is demonstrated to break the compromise between responsivity response speed. Novel heterojunction NTs Se in combination with surface trap states at help regulate electron transport facilitate separation photogenerated electron–hole pairs under photovoltaic mode (at zero bias), leading a high ≈100 mA W −1 620 nm light illumination ultrashort rise/decay time (1.4/7.8 ms). The...

We report a trap-assisted photomultiplication (PM) phenomenon in solution-processed polymer photodetectors (PPDs) based on P3HT:PC71BM as the active layer, maximum EQE of 16,700% is obtained for PPDs with PC71BM doping weight ratio 1%. The PM attributed to enhanced hole tunneling injection assisted by trapped electrons near Al cathode, which can be demonstrated transient photocurrent curves and spectra different ratios. positive effect cathode further confirmed simulated optical field...

Abstract A high‐performance UV photodetector (PD) based on a p‐Se/n‐ZnO hybrid structure with large area (more than 1×1 cm) is presented in this study. The device theoretically equivalent to parallel‐connection circuit for its special and shows multifunction at different voltage bias, which means the output signal can be tailored by an applied voltage. Se/ZnO PD binary response (positive negative current under on/off periodical light illumination) small reverse bias (–0.05 V –0.1 V)...

Self-powered and large scale photodetectors are successfully achieved by integrating novel TiO₂nanowell layers with NiO nanosheets in a flower-like morphology.

Ligand-free rutile and anatase TiO₂nanocrystals were synthesized<italic>via</italic>a hydrolytic sol–gel method. The improved power conversion efficiency was achieved by using as electron extraction layer in the organic solar cells.

Abstract Herein we report superior dye-adsorption performance for flower-like nanostructure composed of two dimensional (2D) MoS 2 nanosheets by a facile hydrothermal method, more prominent adsorption cationic dye compared with anodic indicates the strongly depends on surface charge nanosheets. The mechanism is analyzed, kinetic data fit well pseudo-second-order model, meanwhile capability at different equilibrium concentrations follows Langmuir indicating favorability and feasibility...

Abstract Indium phosphide (InP) core/shell quantum dots (QDs) without intrinsic toxicity have shown great potential to replace the widely applied cadmium‐containing QDs in next‐generation commercial display and lighting applications. However, it remains challenging synthesize InP with high yields (QYs), uniform particle size, simultaneously thicker shell thickness reduce nonradiative Förster resonant energy transfer (FRET). Here, thick InP‐Based QLEDs InP/GaP/ZnS//ZnS stability, QY (≈70%),...

In this work, an efficient CuSO4-catalyzed S-arylation of thiols with aryl and heteroaryl boronic acids at room temperature is established. This catalytic system can tolerate a wide variety arylboronic in the presence only 5 mol % CuSO4 as catalyst inexpensive 1,10-phen·H2O ligand. Moreover, used environment-friendly solvent (EtOH) oxidant (oxygen).

Hybrid inorganic–organic photoelectric devices draw considerable attention because of their unique features by combining the tunable functionality organic molecules and superior intrinsic carrier mobilities inorganic semiconductors. An ordered thin layer TiO2 nanowells is formed in situ with shallow nanoconcave patterns without cracking scalable production a facile economic strategy, these layers are used as building blocks to construct hybrid UV photodetectors (PDs). Organic conducting...

A high-efficiency photoelectrode for dye-sensitized solar cells (DSSCs) should combine the advantageous features of fast electron transport, slow interfacial recombination and large specific surface area. However, these three requirements usually cannot be achieved simultaneously in present state-of-the-art research. Here we report a simple procedure to conflicting by using porous SnO(2) nanotube-TiO(2) (SnO(2) NT-TiO(2)) core-shell structured photoanodes DSSCs. The nanotubes are prepared...

Broadband responsivity enhancement of single Se microtube (Se‐MT) photodetectors in the UV–visible region is presented this research. The pristine Se‐MT photodetector demonstrates broadband photoresponse from 300 to 700 nm with peak ≈19 mA W −1 at 610 and fast speed (rise time 0.32 ms fall 23.02 ms). To further enhance photodetector, Au Pt nanoparticles (NPs) are sputtered on these devices. In contrast only UV by NPs, (≈600% ≈800%) realized tuning size density NPs. phenomena interpreted both...

A novel CdMoO4 -ZnO composite film is prepared by spin-coating microplates on ZnO and constructed as a heterojunction photodetector (PD). With an optimized loading amount of microplates, this PD achieves ≈18-fold higher responsivity than pure at 5 V bias under 350 nm (0.15 mW cm-2 ) UV light illumination, its decay time shortens to half the original value. Furthermore, Au nanoparticles are then deposited modify film, as-constructed with deposition yields approximately two-fold photocurrent...

A UV detector with a high UV-visible rejection ratio achieved by warped Schottky junction between Cu NWs and ZnO.

Photothermal therapy (PTT) as a kind of noninvasive tumor treatment has attracted increasing research interest. However, the efficiency existing PTT agents in near-infrared (NIR) region is major problem that hindered further development PTT. Herein, we present an effective strategy to construct efficient photothermal agent by utilizing intramolecular photoinduced electron transfer (PeT) mechanism, which able dramatically improve conversion NIR region. Specifically, dye (A1) constructed with...

A novel type of high performance ultraviolet (UV) photodetector (PD) based on a ZnO film has been prepared by incorporating BiOCl nanostructure into the film. The responsivity BiOCl/ZnO hybrid PD in UV region can reach 182.87 mA W−1, which is about 2.72 and 6.87 times for that TiO2/ZnO pure PD. rise/decay time 25.83/11.25 s, much shorter than (51.94/26.05 s) (69.34/>120 s). inject photogenerated electrons under light illumination, leading to increase photocurrent, forms barriers block...