scholarly journals Modeling the Free Carrier Recombination Kinetics in PTB7:PCBM Organic Photovoltaics

2016 ◽  
Vol 120 (43) ◽  
pp. 24597-24604 ◽  
Author(s):  
Stefan D. Oosterhout ◽  
Andrew J. Ferguson ◽  
Bryon W. Larson ◽  
Dana C. Olson ◽  
Nikos Kopidakis
Keyword(s):  
Organic Photovoltaics ◽  
Free Carrier ◽  
Carrier Recombination ◽  
Recombination Kinetics

scholarly journals Correction: Corrigendum: Elucidating the role of disorder and free-carrier recombination kinetics in CH3NH3PbI3 perovskite films

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Chan La-o-vorakiat ◽  
Teddy Salim ◽  
Jeannette Kadro ◽  
Mai-Thu Khuc ◽  
Reinhard Haselsberger ◽  
...  
Keyword(s):  
Free Carrier ◽  
Carrier Recombination ◽  
Recombination Kinetics

Ultrafast Relaxation Character of Nonequilibrium Carriers in GaAs Excited by Femtosecond Laser

2006 ◽  
Vol 532-533 ◽  
pp. 572-575
Author(s):  
Ming Zhou ◽  
Dong Qing Yuan ◽  
Li Peng Liu ◽  
Hui Xia Liu ◽  
Nai Fei Ren
Keyword(s):  
Femtosecond Laser ◽  
Relaxation Curve ◽  
Refraction Index ◽  
Free Carrier ◽  
Index Of Refraction ◽  
Lattice Temperature ◽  
Pump Probe ◽  
Recombination Lifetime ◽  
Carrier Effect ◽  
Carrier Recombination

Experiment setup of femtosecond laser pump probe was established, the time resolution of time-delay setting reached 67fs. By use of femtosecond laser with width of 30fs and wavelength is 796nm the dependence of transient change of reflectivity on delayed time in GaAs was measured by pump-probe method. By calculating the change of complex index of refraction (%n), free-carrier effect, lattice-temperature and carrier recombination contributions to relaxation curve was analyzed. When the carrier density N is 1.44×1018/cm3, free-carrier contribution to refraction index %nFC is -7.33×10-4, lattice-temperature %nLT is 0.85×10-4. Based on recombination rate equation, recombination lifetime of 980ps was deduced.

The influence of the mesoporous TiO2 scaffold on the performance of methyl ammonium lead iodide (MAPI) perovskite solar cells: charge injection, charge recombination and solar cell efficiency relationship

2015 ◽  
Vol 3 (44) ◽  
pp. 22154-22161 ◽  
Author(s):  
Alba Matas Adams ◽  
Jose Manuel Marin-Beloqui ◽  
Georgiana Stoica ◽  
Emilio Palomares
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Charge Recombination ◽  
Mesoporous Tio2 ◽  
Lead Iodide ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Carrier Recombination ◽  
Recombination Kinetics

This works shows the influence of the mesoporous TiO2 nature over the carrier recombination kinetics and the perovskite efficiency.

Analysis of Photoinduced Carrier Recombination Kinetics in Flat and Mesoporous Lead Perovskite Solar Cells

2016 ◽  
Vol 2 (1) ◽  
pp. 182-187 ◽  
Author(s):  
Núria F. Montcada ◽  
José Manuel Marín-Beloqui ◽  
Werther Cambarau ◽  
Jesús Jiménez-López ◽  
Lydia Cabau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Carrier Recombination ◽  
Recombination Kinetics

scholarly journals CONSIDERATION OF SURFACE RECOMBINATION WHEN MEASURING THE RECOMBINATION LIFETIME FROM THE PHOTOCONDUCTIVITY DECAY IN LARGE-THICKNESS SAMPLES

2020 ◽  
Author(s):  
Svetlana Kobeleva ◽  
Ivan Schemerov ◽  
Artem Sharapov ◽  
Sergey Yurchuk
Keyword(s):  
Diffusion Length ◽  
Decay Curve ◽  
Surface Recombination ◽  
Life Time ◽  
Free Carrier ◽  
Silicon Sample ◽  
Recombination Lifetime ◽  
Carrier Recombination ◽  
Photoconductivity Decay ◽  
Effective Life

Surface recombination strongly influence on the photoconductivity decay curve. In this work it was shown that usually defined using this curve the effective life time don’t achieve maxima value if silicon sample thickness exceeds six diffusion length. In this case well known formulas for calculation of free carrier recombination lifetime need to be adjusted.

scholarly journals Elucidating the role of disorder and free-carrier recombination kinetics in CH3NH3PbI3 perovskite films

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Chan La-o-vorakiat ◽  
Teddy Salim ◽  
Jeannette Kadro ◽  
Mai-Thu Khuc ◽  
Reinhard Haselsberger ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Terahertz Spectroscopy ◽  
Free Carrier ◽  
Charge Carriers ◽  
Time Resolved ◽  
Broadband Absorption ◽  
Carrier Recombination ◽  
Mobility Of Charge Carriers ◽  
Three Body ◽  
Body Recombination

Abstract Apart from broadband absorption of solar radiation, the performance of photovoltaic devices is governed by the density and mobility of photogenerated charge carriers. The latter parameters indicate how many free carriers move away from their origin, and how fast, before loss mechanisms such as carrier recombination occur. However, only lower bounds of these parameters are usually obtained. Here we independently determine both density and mobility of charge carriers in a perovskite film by the use of time-resolved terahertz spectroscopy. Our data reveal the modification of the free carrier response by strong backscattering expected from these heavily disordered perovskite films. The results for different phases and different temperatures show a change of kinetics from two-body recombination at room temperature to three-body recombination at low temperatures. Our results suggest that perovskite-based solar cells can perform well even at low temperatures as long as the three-body recombination has not become predominant.

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