Surface Recombination and Collection Efficiency in Perovskite Solar Cells from Impedance Analysis

Nowadays, the power conversion efficiency of organometallic mixed halide perovskite solar cells (PSCs) is beyond 25%. To fabricate highly efficient and stable PSCs, the performance of metal oxide charge transport layers (CTLs) is one of the key factors. The CTLs are employed in PSCs to separate the electrons and holes generated in the perovskite active layer, suppressing the charge recombination rate so that the charge collection efficiency can be increased at their respective electrodes. In general, engineering of metal oxide electron transport layers (ETLs) is found to be dominated in the research community to boost the performance of PSCs due to the resilient features of ETLs such as excellent electronic properties, high resistance to thermal temperature and moisture, ensuring good device stability as well as their high versatility in material preparation. The metal oxide hole transport layers in PSCs are recently intensively studied. The performance of PSCs is found to be very promising by using optimized hole transport materials. This review concisely discusses the evolution of some prevalent metal oxide charge transport materials (CTMs) including TiO2, SnO2, and NiOx, which are able to yield high-performance PSCs. The article begins with introducing the development trend of PSCs using different types of CTLs, pointing out the important criteria for metal oxides being effective CTLs, and then a variety of preparation methods for CTLs as employed by the community for high-performance PSCs are discussed. Finally, the challenges and prospects for future research direction toward scalable metal oxide CTM-based PSCs are delineated.

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Role of surface recombination in perovskite solar cells at the interface of HTL/CH3NH3PbI3

Nano Energy ◽

10.1016/j.nanoen.2019.104186 ◽

2020 ◽

Vol 67 ◽

pp. 104186 ◽

Cited By ~ 9

Author(s):

Damian Głowienka ◽

Dong Zhang ◽

Francesco Di Giacomo ◽

Mehrdad Najafi ◽

Sjoerd Veenstra ◽

...

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Surface Recombination

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Numerical Simulation of Single Junction InGaN Solar Cell by SCAPS

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.821.407 ◽

2019 ◽

Vol 821 ◽

pp. 407-413 ◽

Cited By ~ 2

Author(s):

Mohamed Orabi Moustafa ◽

Tariq Alzoubi

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Collection Efficiency ◽

Short Circuit ◽

Photovoltaic Performance ◽

Surface Recombination ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Bandgap Energy ◽

Single Junction

The performance of the InGaN single-junction thin film solar cells has been analyzed numerically employing the Solar Cell Capacitance Simulator (SCAPS-1D). The electrical properties and the photovoltaic performance of the InGaN solar cells were studied by changing the doping concentrations and the bandgap energy along with each layer, i.e. n-and p-InGaN layers. The results reveal an optimum efficiency of the InGaN solar cell of ~ 15.32 % at a band gap value of 1.32 eV. It has been observed that lowering the doping concentration NA leads to an improvement of the short circuit current density (Jsc) (34 mA/cm2 at NA of 1016 cm−3). This might be attributed to the increase of the carrier mobility and hence an enhancement in the minority carrier diffusion length leading to a better collection efficiency. Additionally, the results show that increasing the front layer thickness of the InGaN leads to an increase in the Jsc and to the conversion efficiency (η). This has been referred to the increase in the photogenerated current, as well as to the less surface recombination rate.

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The Role of Surface Recombination on the Performance of Perovskite Solar Cells: Effect of Morphology and Crystalline Phase of TiO2 Contact

Advanced Materials Interfaces ◽

10.1002/admi.201801076 ◽

2018 ◽

Vol 5 (21) ◽

pp. 1801076 ◽

Cited By ~ 13

Author(s):

Jesús Idígoras ◽

Lidia Contreras-Bernal ◽

James M. Cave ◽

Nicola E. Courtier ◽

Ángel Barranco ◽

...

Keyword(s):

Solar Cells ◽

Crystalline Phase ◽

Perovskite Solar Cells ◽

Surface Recombination

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Removing Leakage and Surface Recombination in Planar Perovskite Solar Cells

ACS Energy Letters ◽

10.1021/acsenergylett.6b00719 ◽

2017 ◽

Vol 2 (2) ◽

pp. 424-430 ◽

Cited By ~ 63

Author(s):

Kristofer Tvingstedt ◽

Lidón Gil-Escrig ◽

Cristina Momblona ◽

Philipp Rieder ◽

David Kiermasch ◽

...

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Surface Recombination

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Materials requirements for improving the electron transport layer/perovskite interface of perovskite solar cells determined via numerical modeling

MRS Advances ◽

10.1557/adv.2020.319 ◽

2020 ◽

Vol 5 (50) ◽

pp. 2603-2610

Author(s):

Jared D. Friedl ◽

Ramez Hosseinian Ahangharnejhad ◽

Adam B. Phillips ◽

Michael J. Heben

Keyword(s):

Numerical Modeling ◽

Solar Cells ◽

Electron Transport ◽

High Performance ◽

Perovskite Solar Cells ◽

Surface Recombination ◽

Band Alignment ◽

Transport Layer ◽

Electron Transport Layer ◽

Effective Electron

AbstractPerovskite solar cells continue to garner significant attention in the field of photovoltaics. As the optoelectronic properties of the absorbers become better understood, attention has turned to more deeply understanding the contribution of charge transport layers for efficient extraction of carriers. Titanium oxide is known to be an effective electron transport layer (ETL) in planar perovskite solar cells, but it is unlikely to result in the best device performance possible. To investigate the importance of band energy alignment between the electron transport layer and perovskite, we employ numerical modeling as a function of conduction band offset between these layers, interface recombination velocity, and ETL doping levels. Our simulations offer insight into the advantages of energy band alignment and allow us to determine a range of surface recombination velocities and ETL doping densities that will allow us to identify novel high performance ETL materials.

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Changes from Bulk to Surface Recombination Mechanisms between Pristine and Cycled Perovskite Solar Cells

ACS Energy Letters ◽

10.1021/acsenergylett.7b00059 ◽

2017 ◽

Vol 2 (3) ◽

pp. 681-688 ◽

Cited By ~ 78

Author(s):

Juan-Pablo Correa-Baena ◽

Silver-Hamill Turren-Cruz ◽

Wolfgang Tress ◽

Anders Hagfeldt ◽

Clara Aranda ◽

...

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Surface Recombination

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Interface engineering of perovskite solar cells with PEO for improved performance

Journal of Materials Chemistry A ◽

10.1039/c5ta00407a ◽

2015 ◽

Vol 3 (18) ◽

pp. 9999-10004 ◽

Cited By ~ 42

Author(s):

H. P. Dong ◽

Y. Li ◽

S. F. Wang ◽

W. Z. Li ◽

N. Li ◽

...

Keyword(s):

Solar Cells ◽

Collection Efficiency ◽

Perovskite Solar Cells ◽

Device Performance ◽

Interface Engineering ◽

Electron Hole ◽

Electron Collection ◽

Improved Performance ◽

Hole Recombination ◽

Electron Collection Efficiency

A thin PEO layer was spin-coated on top of TiOx to modify the ETL for improved electron collection efficiency and better retarded electron–hole recombination, and therefore enhance device performance.

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