Thiophene-Functionalized Hybrid Perovskite Microrods and their Application in Photodetector Devices for Investigating Charge Transport Through Interfaces in Particle-Based Materials

2016 ◽  
Vol 9 (1) ◽  
pp. 1077-1085 ◽  
Author(s):  
Tom Kollek ◽  
Daniel Wurmbrand ◽  
Susanne T. Birkhold ◽  
Eugen Zimmermann ◽  
Julian Kalb ◽  
...  
Keyword(s):  
Charge Transport ◽  
Hybrid Perovskite

scholarly journals Spin-dependent charge transport through 2D chiral hybrid lead-iodide perovskites

2019 ◽  
Vol 5 (12) ◽  
pp. eaay0571 ◽  
Author(s):  
Haipeng Lu ◽  
Jingying Wang ◽  
Chuanxiao Xiao ◽  
Xin Pan ◽  
Xihan Chen ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Molecules ◽  
Spin Valve ◽  
Lead Iodide ◽  
Force Microscopy ◽  
Atomic Force ◽  
Hybrid Perovskite ◽  
The Media ◽  
Inorganic Framework ◽  
Inorganic Layers

Chiral-induced spin selectivity (CISS) occurs when the chirality of the transporting medium selects one of the two spin ½ states to transport through the media while blocking the other. Monolayers of chiral organic molecules demonstrate CISS but are limited in their efficiency and utility by the requirement of a monolayer to preserve the spin selectivity. We demonstrate CISS in a system that integrates an inorganic framework with a chiral organic sublattice inducing chirality to the hybrid system. Using magnetic conductive-probe atomic force microscopy, we find that oriented chiral 2D-layered Pb-iodide organic/inorganic hybrid perovskite systems exhibit CISS. Electron transport through the perovskite films depends on the magnetization of the probe tip and the handedness of the chiral molecule. The films achieve a highest spin-polarization transport of up to 86%. Magnetoresistance studies in modified spin-valve devices having only one ferromagnet electrode confirm the occurrence of spin-dependent charge transport through the organic/inorganic layers.

Ultrafast Dynamic Microscopy of Carrier and Exciton Transport

2019 ◽  
Vol 70 (1) ◽  
pp. 219-244 ◽  
Author(s):  
Tong Zhu ◽  
Jordan M. Snaider ◽  
Long Yuan ◽  
Libai Huang
Keyword(s):  
Charge Transport ◽  
Organic Solar Cells ◽  
Transient Absorption ◽  
Ultrafast Imaging ◽  
Ultrafast Optical ◽  
Ultrafast Dynamic ◽  
Exciton Transport ◽  
Solar Energy Harvesting ◽  
Hybrid Perovskite ◽  
Ultrafast Optical Spectroscopy

We highlight the recent progress in ultrafast dynamic microscopy that combines ultrafast optical spectroscopy with microscopy approaches, focusing on the application transient absorption microscopy (TAM) to directly image energy and charge transport in solar energy harvesting and conversion systems. We discuss the principles, instrumentation, and resolutions of TAM. The simultaneous spatial, temporal, and excited-state-specific resolutions of TAM unraveled exciton and charge transport mechanisms that were previously obscured in conventional ultrafast spectroscopy measurements for systems such as organic solar cells, hybrid perovskite thin films, and molecular aggregates. We also discuss future directions to improve resolutions and to develop other ultrafast imaging contrasts beyond transient absorption.

Inverted-heterostructure based device of CH3NH3PbBr3 for Schottky photodiode

2019 ◽  
Vol 88 (3) ◽  
pp. 30101 ◽  
Author(s):  
Jyoti Chaudhary ◽  
Ruchita Gautam ◽  
Shaily Choudhary ◽  
Ajay Singh Verma
Keyword(s):  
Charge Transport ◽  
Charge Carrier Mobility ◽  
Vital Role ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Hybrid Perovskite ◽  
Current Voltage ◽  
Light Excitation ◽  
Schottky Photodiode

In this paper, we have presented a device {FTO (Fluorine-doped tin Oxide)/TiO2/hybrid perovskite/Spiro-OMeTAD/Al} of photoconductive material CH3NH3PbBr3 for the photovoltaic applications. TiO2 has been used as an electron transport layer, which plays the vital role of extracting electrons, transporting electrons, blocking holes and also aligned the perfect energy match with CH3NH3PbBr3. The current–voltage (I–V) characteristics of the fabricated device have been analyzed to evaluate the various diode parameters and understand the charge transport properties. We have analyzed of space charge limited conduction (SCLC) region to evaluate the charge carrier mobility and the calculated value was 1.59 × 10−4 cm2 V−1 s−1. The mobility of carrier may also be extract by I–V characteristics with 0–10 V (charge transport graph). The current level in the device increases considerably under light excitation. Furthermore, impedance spectroscopy analysis has been performed to identify the internal circuit parameters of the photoconductive device.

scholarly journals Interfacial Haloplumbate Modulation for Efficient and Stable Hybrid Perovskite Photovoltaics

2021 ◽  
Author(s):  
Huanhuan Wang ◽  
Zhuang Zhang ◽  
Jovana V. Milić ◽  
Liguo Tan ◽  
Zaiwei Wang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Perovskite Solar Cells ◽  
Operational Stability ◽  
Hybrid Perovskite ◽  
Interfacial Modification ◽  
New Material ◽  
Interface Materials ◽  
Stable Hybrid ◽  
Excellent Stability

<p>The commercialization of perovskite solar cells is mainly limited by their operational stability. Interlayer modification by thin interface materials between the perovskite and the charge transport layers is one of the most effective methods to promote the efficiency and stability of perovskite devices. However, the commonly used interlayer materials do not meet all the demands, including good film quality, excellent stability, and passivation capability without interfering with the charge transport. <a></a><a>In this work, we propose a new material, water stable haloplumbate [TBA]PbI<sub>3</sub> for interfacial modification, which is formed on the perovskite surface <i>in-situ</i> by <i>tetra</i>-butylammonium iodide (TBAI) treatment.</a> Benefiting from its passivation effect and robustness, the modified devices result in a power conversion efficiency of 22.90% with excellent environmental and operational stability. </p>

Unraveling the Charge Transport Mechanism in Mechanochemically Processed Hybrid Perovskite Solar Cell

Langmuir ◽  
2021 ◽  
Author(s):  
Priyabrata Sadhukhan ◽  
Dibyendu Ghosh ◽  
Payal Sengupta ◽  
Sayan Bhattacharyya ◽  
Sachindranath Das
Keyword(s):  
Solar Cell ◽  
Charge Transport ◽  
Transport Mechanism ◽  
Perovskite Solar Cell ◽  
Charge Transport Mechanism ◽  
Hybrid Perovskite
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