Ferroelectric barium titanate microspheres with superior light-scattering ability for the performance enhancements of flexible polymer dye sensitized solar cells and photodetectors

Baiju, K. Gireesh; Murali, Banavoth; Kumaresan, Duraisamy

doi:10.1016/j.solener.2021.05.063

Cited by 21 publications

(6 citation statements)

References 49 publications

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“…Different from conventional semiconductors, ferroelectric materials show high remnant polarization and hence large depolarization electric field throughout the whole bulk. [8][9][10][11] This can lead to high separation efficiency of photo-generated carriers even at zero bias and thus superior photoelectrical response for the PDs, and have been already confirmed in our recent work about ferroelectric based self-powered PDs. 9 However, due to low carriers concentration of ferroelectrics themselves, the photocurrent of this kind of PDs is low, which requires high-precision measurement systems to detect the signal.…”

Section: Introductionsupporting

confidence: 68%

“…Preceramic polycarbosilane polymers are commonly used as precursors to make ceramic fibers 10,39 and ceramic matrix. [7][8][9]40,41 The chemical and volume changes that accompany ceramization of the polymer during pyrolysis have been documented in several studies. For example, see Refs [39][40][41][42].…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, these kinds of built‐in electric field only exist in the space‐charge region of the junction interfaces, leading to low separation efficiency of photo‐generated carriers and thus weak photoelectric properties of the PDs. Different from conventional semiconductors, ferroelectric materials show high remnant polarization and hence large depolarization electric field throughout the whole bulk 8–11 9 .…”

Section: Introductionmentioning

confidence: 93%

“…23,[31][32][33][34][35][36][37][38] T in these cases to determine the resin flow ing times corresponding to different infilt Preceramic polycarbosilane polymers as precursors to make ceramic fibers 10,3 trix. [7][8][9]40,41 The chemical and volume ch pany ceramization of the polymer during documented in several studies. For exam 42 ].…”

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confidence: 99%

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Ultrasensitive self‐powered UV PDs via depolarization and heterojunction fields jointly enhanced carriers separation

Zhang

Chen

et al. 2021

J Am Ceram Soc

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In current semiconductor-based self-powered ultraviolet (UV) photodetectors (PDs), because the built-in electric field only exits in the space-charge region of p-n junction or Schottky junction interfaces, the photo-generated carriers can't be efficiently separated and thus the photoelectric response is low. To solve this issue, in this work, we design and fabricate new-type Pb,La(Zr,Ti)O 3 ferroelectrics/TiO 2 semiconductors heterojunction self-powered UV photodetectors. The results indicate that by introducing Pb,La(Zr,Ti)O 3 ferroelectric layers, the photocurrent of the PDs is greatly improved and at a negative poling electric voltage, the device exhibits excellent self-powered UV photoelectric properties with a large responsivity of 21 mA/W, high specific detectivity of 2.4 × 10 11 Jones, and fast response speed (rise time of 2.4 ms, decay time of 3.2 ms). These values are far superior to those of all recently reported self-powered UV PDs and their huge improvement is primarily because the depolarization field caused by the high remnant polarization of Pb,La(Zr,Ti)O 3 and the built-in electric field resulting from the heterojunction interfaces of the Pb,La(Zr,Ti)O 3 and the TiO 2 thin films jointly enhance the separation efficiency of photo-generated electrons and holes.Besides, the heterojunction PDs also show good weak UV light detection ability. This work opens new avenue for designing and fabricating next-generation selfpowered UV PDs by a simple, low-cost, and easy to mass-produce way.

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Section: Introductionsupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

mentioning

confidence: 99%

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Ultrasensitive self‐powered UV PDs via depolarization and heterojunction fields jointly enhanced carriers separation

Zhang

Chen

et al. 2021

J Am Ceram Soc

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“…Among Ti 3 C 2 T x MXene-derived materials, sodium titanate Na 2 Ti 3 O 7 (denoted as NTO)-based composites, with a large interlayer spacing, have been considered as ideal anodes for rechargeable batteries . Recently, Na 2 Ti 3 O 7 -based composites have been designed in various nanostructures including nanowires, nanospheres, and nanosheets and showed great potential in LIBs, SIBs, potassium-ion batteries, supercapacitors, and solar cells . On the other hand, enlarging the interlayer space between the Ti 3 C 2 T x MXene layers can also be predicted to provide effective transport pathways as well as more active sites for ion and electron transfer and storage.…”

Section: Introductionmentioning

confidence: 99%

Sandwich-like Na₂Ti₃O₇ Nanosheet/Ti₃C₂ MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

Luo

Zhao

et al. 2022

J. Phys. Chem. C

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MXenes have shown great promise in high-efficiency energy storage on account of superior electrical conductivity and outstanding mechanical properties. However, the practical applications of MXenes in electrochemical energy storage are limited by layer restacking and surface oxidation issues. Herein, a unique sandwich-like Na 2 Ti 3 O 7 nanosheet/ Ti 3 C 2 MXene composite (NTO@MXene) with an expanded interlayer spacing of MXene has been fabricated by one-step simultaneous alkalization and oxidation. The NTO@MXene with a unique structure shortens the ion diffusion distance and promotes electrolyte infiltration, which is favorable for high-performance rechargeable batteries. As a result, the NTO@MXene composite as an anode electrode for lithium-ion batteries delivered exceptional rate performance (159 mAh g −1 at 4 A g −1 ) and long-life cycling performance (capacity retention of nearly 100% at 4 A g −1 after 1200 cycles). When used as a sodium-ion battery anode, the electrode also achieved an extraordinary capacity of 103 mAh g −1 at 0.1 A g −1 and an exceptional capacity retention of 70% at a high current density of 2 A g −1 after 3000 cycles.

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Account of Structural, Theoretical, and Photovoltaic Properties of ABO₃ Oxide Perovskites Photoanode‐Based Dye‐Sensitized Solar Cells

et al. 2021

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The quality of human life in the modern era seems to be highly reliable on the technology advancements and energy consumption. [1] Globally, around 85% of the energy depends on nonrenewable sources which may extinct within next few years. [2] In this context, solar cells in specifically dye-sensitized solar cells (DSSCs), which come under thin-filmbased third-generation solar cells, are considered to play a vital role of fulfilling the future energy needs by means of its proficient energy conversion potential, in addition to its lightweight, low-cost, reliable efficiency, multicolor options, and feasible for both indoor and outdoor applications. It is one of the most promising energy conversion devices from its technological discovery of early 1990s by Brain O'Regan and Michael Gratzel [3,4] In general, the working of DSSC depends on five major components, namely, 1) substrate, 2) semiconductor nanolayer, 3) the sensitizer, 3) redox electrolyte, and 5) counter electrode. The schematic representation of a typical DSSC with components is shown in Figure 1.Initially, the photosensitizer (dye) of the DSSC usually in its ground state and the illumination of light over the DSSC excite the ground state dye molecules from highest occupied molecular orbital (HOMO) level to the lowest unoccupied molecular orbital (LUMO) level (1), and then the electron from the LUMO level jumps over the conduction band of the semiconductor in 150 ps (2) and reaches the TCO. The holes produced during the excitation of dye molecules are scavenged by the electrons from the redox electrolyte (4) in 0.5 μs. The electrons reached the TCO then move to the cathode through the external circuit and power up the electrical load. Finally, the oxidized electrolyte gets reduced at the cathode (5) in 10 μs. [5,6] Besides these carrier-transport processes, some adverse reactions like nonradiative carrier-recombination paths will occur that desperately reduces the overall device performance. [7] Such unfavorable reactions are follows: nonradiative decay of immediate excitation of dye molecule to its ground state occurs in ns (6), plausible recombination of the electrons from the conduction band of the semiconductor material to the ground state of dye molecule occurs in ms (7), and to the electrolyte occurs in 100 ns to 1 ms (8), respectively. [8] The substrate for the photoanode and cathode is the most important component. Apart from this metal foil or polymeric film, transparent conductive oxide (TCO)-coated transparent glass substrate, such as fluorine-doped tin dioxide (FTO) or

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Ferroelectric barium titanate microspheres with superior light-scattering ability for the performance enhancements of flexible polymer dye sensitized solar cells and photodetectors

Cited by 21 publications

References 49 publications

Ultrasensitive self‐powered UV PDs via depolarization and heterojunction fields jointly enhanced carriers separation

Ultrasensitive self‐powered UV PDs via depolarization and heterojunction fields jointly enhanced carriers separation

Sandwich-like Na₂Ti₃O₇ Nanosheet/Ti₃C₂ MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

Account of Structural, Theoretical, and Photovoltaic Properties of ABO₃ Oxide Perovskites Photoanode‐Based Dye‐Sensitized Solar Cells

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Ferroelectric barium titanate microspheres with superior light-scattering ability for the performance enhancements of flexible polymer dye sensitized solar cells and photodetectors

Cited by 21 publications

References 49 publications

Ultrasensitive self‐powered UV PDs via depolarization and heterojunction fields jointly enhanced carriers separation

Ultrasensitive self‐powered UV PDs via depolarization and heterojunction fields jointly enhanced carriers separation

Sandwich-like Na2Ti3O7 Nanosheet/Ti3C2 MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

Account of Structural, Theoretical, and Photovoltaic Properties of ABO3 Oxide Perovskites Photoanode‐Based Dye‐Sensitized Solar Cells

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Product

Resources

About

Sandwich-like Na₂Ti₃O₇ Nanosheet/Ti₃C₂ MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

Account of Structural, Theoretical, and Photovoltaic Properties of ABO₃ Oxide Perovskites Photoanode‐Based Dye‐Sensitized Solar Cells