Defect trapping states and charge carrier recombination in organic–inorganic halide perovskites

2016 ◽  
Vol 4 (4) ◽  
pp. 793-800 ◽  
Author(s):  
Xiaoming Wen ◽  
Yu Feng ◽  
Shujuan Huang ◽  
Fuzhi Huang ◽  
Yi-Bing Cheng ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Relaxation Rate ◽  
Defect Density ◽  
Linear Increase ◽  
Carrier Recombination ◽  
Halide Perovskites ◽  
Charge Carrier Recombination ◽  
Pl Intensity ◽  
Recombination Dynamics

The defect density and relaxation rate in organic–inorganic perovskites dominate the carrier recombination dynamics and thus PL intensity exhibits super-linear increase with increasing excitation.

scholarly journals Hybrid perovskites: Charge carrier recombination effects in photovoltaic devices

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
O. Amora
Keyword(s):  
Charge Carrier ◽  
Bulk Material ◽  
Low Cost ◽  
Electronic Conductivity ◽  
Perovskite Solar Cells ◽  
Carrier Recombination ◽  
Recombination Processes ◽  
Halide Perovskites ◽  
Charge Carrier Recombination ◽  
Lead Halide

Hybrid lead halide perovskites emerged at the beginning of 2010s decade as one of the most promising materials for photovoltaic applications. Easy and low-cost solution-based fabrication processes can be used, obtaining perovskite solar cells (PSCs) with efficiencies above 20%. However, there still are some major issues to overcome, like stabiliddty, and the general understanding of the recombination mechanisms resHybrid lead halide perovskites emerged at the beginning of 2010s decade as one of the most promising materials for photovoltaic applications. Easy and low-cost solution-based fabrication processes can be used, obtaining perovskite solar cells (PSCs) with efficiencies above 20%. However, there still are some major issues to overcome, like stability, and the general understanding of the recombination mechanisms results particularly puzzling. In this chapter, an analysis is provided on most recent research results about the different mechanisms, location and relationships of charge carrier recombination in PSCs. After introducing the theoretical framework, including the main transport equations and relations with luminescence techniques, the radiative and non-radiative natures of recombination are commented and compared in terms of main contributions. Also, the effects of changing the perovskite composition and morphology are surveyed. The location of the recombination processes, whether in the bulk material or towards the interface, are tackled, as well as related features with the current-voltage hysteresis. On the latter, and along the complete chapter, the dual ionic-electronic conductivity of hybrid lead halide perovskites is particularly attended. ults particularly puzzling. In this chapter, an analysis is provided on most recent research results about the different mechanisms, location and relationships of charge carrier recombination in PSCs. After introducing the theoretical framework, including the main transport equations and relations with luminescence techniques, the radiative and non-radiative natures of recombination are commented and compared in terms of main contributions. Also, the effects of changing the perovskite composition and morphology are surveyed. The location of the recombination processes, whether in the bulk material or towards the interface, are tackled, as well as related features with the current-voltage hysteresis. On the latter, and along the complete chapter, the dual ionic-electronic conductivity of hybrid lead halide perovskites is particularly attended. ybrid lead halide perovskites emerged at the beginning of 2010s decade as one of the most promising materials for photovoltaic applications. Easy and low-cost solution-based fabrication processes can be used, obtaining perovskite solar cells (PSCs) with efficiencies above 20%. However, there still are some major issues to overcome, like stability, and the general understanding of the recombination mechanisms results particularly puzzling. In this chapter, an analysis is provided on most recent research results about the different mechanisms, location and relationships of charge carrier recombination in PSCs. After introducing the theoretical framework, including the main transport equations and relations with luminescence techniques, the radiative and non-radiative natures of recombination are commented and compared in terms of main contributions. Also, the effects of changing the perovskite composition and morphology are surveyed. The location of the recombination processes, whether in the bulk material or towards the interface, are tackled, as well as related features with the current-voltage hysteresis. On the latter, and along the complete chapter, the dual ionic-electronic conductivity of hybrid lead halide perovskites is particularly attended.

scholarly journals Are Shockley-Read-Hall and ABC models valid for lead halide perovskites?

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Alexander Kiligaridis ◽  
Pavel A. Frantsuzov ◽  
Aymen Yangui ◽  
Sudipta Seth ◽  
Jun Li ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Auger Recombination ◽  
Mapping Technique ◽  
Decay Kinetics ◽  
Advanced Technique ◽  
Charge Carrier Dynamics ◽  
Carrier Recombination ◽  
Halide Perovskites ◽  
Charge Carrier Recombination ◽  
Lead Halide

AbstractMetal halide perovskites are an important class of emerging semiconductors. Their charge carrier dynamics is poorly understood due to limited knowledge of defect physics and charge carrier recombination mechanisms. Nevertheless, classical ABC and Shockley-Read-Hall (SRH) models are ubiquitously applied to perovskites without considering their validity. Herein, an advanced technique mapping photoluminescence quantum yield (PLQY) as a function of both the excitation pulse energy and repetition frequency is developed and employed to examine the validity of these models. While ABC and SRH fail to explain the charge dynamics in a broad range of conditions, the addition of Auger recombination and trapping to the SRH model enables a quantitative fitting of PLQY maps and low-power PL decay kinetics, and extracting trap concentrations and efficacies. However, PL kinetics at high power are too fast and cannot be explained. The proposed PLQY mapping technique is ideal for a comprehensive testing of theories and applicable to any semiconductor.

scholarly journals Charge-Carrier Recombination in Halide Perovskites

2019 ◽  
Vol 119 (20) ◽  
pp. 11007-11019 ◽  
Author(s):  
Dane W. deQuilettes ◽  
Kyle Frohna ◽  
David Emin ◽  
Thomas Kirchartz ◽  
Vladimir Bulovic ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Recombination ◽  
Halide Perovskites ◽  
Charge Carrier Recombination

Charge carrier recombination dynamics in perovskite and polymer solar cells

2016 ◽  
Vol 108 (11) ◽  
pp. 113505 ◽  
Author(s):  
Andreas Paulke ◽  
Samuel D. Stranks ◽  
Juliane Kniepert ◽  
Jona Kurpiers ◽  
Christian M. Wolff ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Polymer Solar Cells ◽  
Carrier Recombination ◽  
Charge Carrier Recombination ◽  
Recombination Dynamics
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