Photoinduced Charge Carrier Dynamics of Zn−Porphyrin−TiO2Electrodes: The Key Role of Charge Recombination for Solar Cell Performance

2011 ◽  
Vol 115 (16) ◽  
pp. 3679-3690 ◽  
Author(s):  
Hiroshi Imahori ◽  
Soonchul Kang ◽  
Hironobu Hayashi ◽  
Mitsutaka Haruta ◽  
Hiroki Kurata ◽  
...  
Keyword(s):  
Solar Cell ◽  
Charge Carrier ◽  
Charge Recombination ◽  
Carrier Dynamics ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Charge Carrier Dynamics ◽  
Photoinduced Charge

scholarly journals Ligand-free preparation of polymer/CuInS2 nanocrystal films and the influence of 1,3-benzenedithiol on their photovoltaic performance and charge recombination properties

2019 ◽  
Vol 7 (4) ◽  
pp. 943-952 ◽  
Author(s):  
Thomas Rath ◽  
Dorothea Scheunemann ◽  
Roberto Canteri ◽  
Heinz Amenitsch ◽  
Jasmin Handl ◽  
...  
Keyword(s):  
Solar Cell ◽  
Charge Carrier ◽  
Photovoltaic Performance ◽  
Charge Recombination ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Carrier Lifetimes ◽  
Ligand Free ◽  
Nanocrystal Films

Modification of ligand-free polymer/CuInS2 absorber layers led to improved solar cell performance and charge carrier lifetimes.

scholarly journals Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite–quantum dot interface

2020 ◽  
Vol 8 (42) ◽  
pp. 14834-14844
Author(s):  
Piotr Piatkowski ◽  
Sofia Masi ◽  
Pavel Galar ◽  
Mario Gutiérrez ◽  
Thi Tuyen Ngo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Charge Carrier ◽  
Rate Constants ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Carrier Transfer ◽  
Charge Carrier Dynamics ◽  
Conduction Bands

Charge-carrier transfer (CT) from the perovskite host to PbS QDs were studied using fs-transient absorption and THz techniques. The CT rate constants increase with the size of QDs due to a change in the position of valence and conduction bands in PbS QDs.

scholarly journals WO3/BiVO4: impact of charge separation at the timescale of water oxidation

2019 ◽  
Vol 10 (9) ◽  
pp. 2643-2652 ◽  
Author(s):  
Shababa Selim ◽  
Laia Francàs ◽  
Miguel García-Tecedor ◽  
Sacha Corby ◽  
Chris Blackman ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Oxidation ◽  
Charge Separation ◽  
Carrier Dynamics ◽  
Applied Bias ◽  
Charge Carrier Dynamics

Unveiling the role of applied bias on the charge carrier dynamics in the WO3/BiVO4 junction during water oxidation.

scholarly journals Quantification of electron accumulation at grain boundaries in perovskite polycrystalline films by correlative infrared-spectroscopic nanoimaging and Kelvin probe force microscopy

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Ting-Xiao Qin ◽  
En-Ming You ◽  
Mao-Xin Zhang ◽  
Peng Zheng ◽  
Xiao-Feng Huang ◽  
...  
Keyword(s):  
Solar Cell ◽  
Grain Boundaries ◽  
Cell Performance ◽  
Kelvin Probe Force Microscopy ◽  
Light Illumination ◽  
Kelvin Probe ◽  
Solar Cell Performance ◽  
Force Microscopy ◽  
Infrared Spectroscopic

AbstractOrganic–inorganic halide perovskites are emerging materials for photovoltaic applications with certified power conversion efficiencies (PCEs) over 25%. Generally, the microstructures of the perovskite materials are critical to the performances of PCEs. However, the role of the nanometer-sized grain boundaries (GBs) that universally existing in polycrystalline perovskite films could be benign or detrimental to solar cell performance, still remains controversial. Thus, nanometer-resolved quantification of charge carrier distribution to elucidate the role of GBs is highly desirable. Here, we employ correlative infrared-spectroscopic nanoimaging by the scattering-type scanning near-field optical microscopy with 20 nm spatial resolution and Kelvin probe force microscopy to quantify the density of electrons accumulated at the GBs in perovskite polycrystalline thin films. It is found that the electron accumulations are enhanced at the GBs and the electron density is increased from 6 × 1019 cm−3 in the dark to 8 × 1019 cm−3 under 10 min illumination with 532 nm light. Our results reveal that the electron accumulations are enhanced at the GBs especially under light illumination, featuring downward band bending toward the GBs, which would assist in electron-hole separation and thus be benign to the solar cell performance.

Role of ZnS Segment on Charge Carrier Dynamics and Photoluminescence Property of CdSe@CdS/ZnS Quantum Rods

2018 ◽  
Vol 122 (11) ◽  
pp. 6379-6387 ◽  
Author(s):  
Pushpendra Kumar ◽  
Rajeev Ray ◽  
Patrick Adel ◽  
Franziska Luebkemann ◽  
Dirk Dorfs ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Photoluminescence Property ◽  
Carrier Dynamics ◽  
Quantum Rods ◽  
Charge Carrier Dynamics

On the Role of PTB7-Th:[70]PCBM Blend Concentration in ortho -Xylene on Polymer Solar-Cell Performance

2017 ◽  
Vol 5 (12) ◽  
pp. 2168-2174 ◽  
Author(s):  
Luigi Salamandra ◽  
Luca La Notte ◽  
Giorgia Paronesso ◽  
Gianpaolo Susanna ◽  
Lucio Cinà ◽  
...  
Keyword(s):  
Solar Cell ◽  
Polymer Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance
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