Structural, optical and photoluminescence properties of hybrid metal–organic halide perovskite thin films prepared by a single step solution method

2018 ◽  
Vol 29 (18) ◽  
pp. 15404-15410 ◽  
Author(s):  
Isaac Montes-Valenzuela ◽  
Francisco Pérez-Sánchez ◽  
Arturo Morales-Acevedo
Keyword(s):  
Thin Films ◽  
Solution Method ◽  
Single Step ◽  
Photoluminescence Properties ◽  
Organic Halide ◽  
Metal Organic ◽  
Halide Perovskite

scholarly journals Conversion of metal-organic halide perovskite from PbI2 precursor films grown by hot-wall method

2018 ◽  
Vol 192 ◽  
pp. 01031
Author(s):  
Satoru Seto ◽  
Rintaro Shimizu ◽  
Makoto Tokuda
Keyword(s):  
Solar Cells ◽  
Perovskite Phase ◽  
Perovskite Solar Cells ◽  
X Ray Diffraction ◽  
Organic Halide ◽  
Metal Organic ◽  
Halide Perovskite ◽  
Planar Heterojunction ◽  
Conversion Efficiencies ◽  
Wall Method

We report on metal-organic halide perovskite CH3NH3PbI3 films converted from PbI2 precursors for planar heterojunction perovskite solar cells. PbI2 films as a precursor were deposited by hot-wall method and conventional vacuum evaporation. The conversion to perovskite phase from the PbI2 films were performed by annealing in methyl ammonium iodine (MAI) vapour at 120-150 °C. We confirmed that no residual PbI2 phase can be detected in the converted perovskite films by x-ray diffraction measurements. The surface morphology of the perovskite films was measured by AFM. Roughness Ra of the films is 17.8 nm, which is comparable value to the reported ones. Using the converted perovskite films we fabricated tentative perovskite solar cells with a device architecture of ITO/PEDOT:PSS/Perovskite/C60/Ag. The power conversion efficiencies of the fabricated solar cells from a conventional evaporation and the hot-wall method exhibited 2.22 and 2.33%, respectively.

Single-step direct fabrication of luminescent Cu-doped ZnxCd1−xS quantum dot thin films via a molecular precursor solution approach and their application in luminescent, transparent, and conductive thin films

Nanoscale ◽  
2014 ◽  
Vol 6 (16) ◽  
pp. 9640-9645 ◽  
Author(s):  
Yanyan Chen ◽  
Shenjie Li ◽  
Lijian Huang ◽  
Daocheng Pan
Keyword(s):  
Thin Films ◽  
Quantum Dot ◽  
Solution Method ◽  
Precursor Solution ◽  
Single Step ◽  
Solution Approach ◽  
Molecular Precursor ◽  
Direct Fabrication ◽  
Conductive Thin Films

Luminescent Cu-doped ZnxCd1−xS quantum dot thin films have been directly fabricated via a facile solution method in open air.

scholarly journals Single-Step Synthesis of Dual Phase Bright Blue-Green Emitting Lead Halide Perovskite Nanocrystal Thin Films

2019 ◽  
Vol 31 (17) ◽  
pp. 6824-6832 ◽  
Author(s):  
Harshita Bhatia ◽  
Julian A. Steele ◽  
Cristina Martin ◽  
Masoumeh Keshavarz ◽  
Guillermo Solis-Fernandez ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Step ◽  
Dual Phase ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Bright Blue

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

Charge Trapping and Degradation Properties of PZT Thin Films for MEMS

1996 ◽  
Vol 444 ◽  
Author(s):  
Hyeon-Seag Kim ◽  
D. L. Polla ◽  
S. A. Campbell
Keyword(s):  
Thin Films ◽  
Loss Factor ◽  
High Field ◽  
Microelectromechanical Systems ◽  
Charge Trapping ◽  
Metal Organic ◽  
Electrical Reliability ◽  
Silicon Based ◽  
Degradation Properties ◽  
Organic Decomposition

AbstractThe electrical reliability properties of PZT (54/46) thin films have been measured for the purpose of integrating this material with silicon-based microelectromechanical systems. Ferroelectric thin films of PZT were prepared by metal organic decomposition. The charge trapping and degradation properties of these thin films were studied through device characteristics such as hysteresis loop, leakage current, fatigue, dielectric constant, capacitancevoltage, and loss factor measurements. Several unique experimental results have been found. Different degradation processes were verified through fatigue (bipolar stress), low and high charge injection (unipolar stress), and high field stressing (unipolar stress).

scholarly journals On the Use of MOFs and ALD Layers as Nanomembranes for the Enhancement of Gas Sensors Selectivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1552 ◽  
Author(s):  
Weber ◽  
Graniel ◽  
Balme ◽  
Miele ◽  
Bechelany
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Metal Organic Frameworks ◽  
Atomic Layer ◽  
Operational Performance ◽  
Layer Deposition ◽  
Metal Organic ◽  
Further Development ◽  
Different Gases

Improving the selectivity of gas sensors is crucial for their further development. One effective route to enhance this key property of sensors is the use of selective nanomembrane materials. This work aims to present how metal-organic frameworks (MOFs) and thin films prepared by atomic layer deposition (ALD) can be applied as nanomembranes to separate different gases, and hence improve the selectivity of gas sensing devices. First, the fundamentals of the mechanisms and configuration of gas sensors will be given. A selected list of studies will then be presented to illustrate how MOFs and ALD materials can be implemented as nanomembranes and how they can be implemented to improve the operational performance of gas sensing devices. This review comprehensively shows the benefits of these novel selective nanomaterials and opens prospects for the sensing community.

scholarly journals An advancement in the synthesis of unique soft magnetic CoCuFeNiZn high entropy alloy thin films

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chokkakula L. P. Pavithra ◽  
Reddy Kunda Siri Kiran Janardhana ◽  
Kolan Madhav Reddy ◽  
Chandrasekhar Murapaka ◽  
Joydip Joardar ◽  
...  
Keyword(s):  
Thin Films ◽  
Saturation Magnetization ◽  
Functional Materials ◽  
Single Step ◽  
High Entropy Alloy ◽  
High Saturation Magnetization ◽  
Soft Magnetic ◽  
High Entropy ◽  
High Saturation ◽  
Electrochemical Approach

AbstractDiscovery of advanced soft-magnetic high entropy alloy (HEA) thin films are highly pursued to obtain unidentified functional materials. The figure of merit in current nanocrystalline HEA thin films relies in integration of a simple single-step electrochemical approach with a complex HEA system containing multiple elements with dissimilar crystal structures and large variation of melting points. A new family of Cobalt–Copper–Iron–Nickel–Zinc (Co–Cu–Fe–Ni–Zn) HEA thin films are prepared through pulse electrodeposition in aqueous medium, hosts nanocrystalline features in the range of ~ 5–20 nm having FCC and BCC dual phases. The fabricated Co–Cu–Fe–Ni–Zn HEA thin films exhibited high saturation magnetization value of ~ 82 emu/g, relatively low coercivity value of 19.5 Oe and remanent magnetization of 1.17%. Irrespective of the alloying of diamagnetic Zn and Cu with ferromagnetic Fe, Co, Ni elements, the HEA thin film has resulted in relatively high saturation magnetization which can provide useful insights for its potential unexplored applications.

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