Effects of Small Polar Molecules (MA+ and H2O) on Degradation Processes of Perovskite Solar Cells

2017 ◽  
Vol 9 (17) ◽  
pp. 14960-14966 ◽  
Author(s):  
Chunqing Ma ◽  
Dong Shen ◽  
Jian Qing ◽  
Hrisheekesh Thachoth Chandran ◽  
Ming-Fai Lo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Polar Molecules ◽  
Degradation Processes

Polar molecules modify perovskite surface to reduce recombination in perovskite solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 9090-9095 ◽  
Author(s):  
Jing Zhang ◽  
Peng Wang ◽  
Xiaokun Huang ◽  
Jie Xu ◽  
Limin Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Charge Separation ◽  
Perovskite Solar Cells ◽  
Thin Film Solar Cells ◽  
Polar Molecules ◽  
Interfacial Charge

Thin film solar cells can work efficiently by successful interfacial charge separation/collection.

scholarly journals Photodecomposition and thermal decomposition in methylammonium halide lead perovskites and inferred design principles to increase photovoltaic device stability

2018 ◽  
Vol 6 (20) ◽  
pp. 9604-9612 ◽  
Author(s):  
Emilio J. Juarez-Perez ◽  
Luis K. Ono ◽  
Maki Maeda ◽  
Yan Jiang ◽  
Zafer Hawash ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Solar Cells ◽  
Thermal Degradation ◽  
Perovskite Solar Cells ◽  
Design Principles ◽  
Photovoltaic Device ◽  
Operational Stability ◽  
Degradation Processes ◽  
Device Stability ◽  
Hybrid Perovskite

Strategies of how to mitigate photodegradation and thermal degradation processes are proposed in this work in order to further improve operational stability in hybrid perovskite solar cells.

Insights Into the Microscopic and Degradation Processes in Hybrid Perovskite Solar Cells Using Noise Spectroscopy

Solar RRL ◽  
2017 ◽  
Vol 2 (1) ◽  
pp. 1700173 ◽  
Author(s):  
Apoorva Singh ◽  
Pabitra K. Nayak ◽  
Suman Banerjee ◽  
Zhiping Wang ◽  
Jacob Tse-Wei Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Degradation Processes ◽  
Hybrid Perovskite ◽  
Noise Spectroscopy

scholarly journals Investigation of degradation processes in perovskite under the influence of external factors

2021 ◽  
Vol 3 (319) ◽  
pp. 19-24
Author(s):  
A.A. Zakhidov ◽  
◽  
G.T. Zhamanbayeva ◽  
G.Sh. Yar-Mukhamedova ◽  
◽  
...  
Keyword(s):  
Solar Cells ◽  
Elevated Temperatures ◽  
Perovskite Solar Cells ◽  
Photochemical Reactions ◽  
Charge Carriers ◽  
Photovoltaic Devices ◽  
Degradation Processes ◽  
Perovskite Materials ◽  
New Generation ◽  
Perovskite Photovoltaic

The article describes a number of new fundamental knowledge about mechanisms of degradation processes occurring in photoactive perovskite materials based on complex lead halides and solar cells based on them, modern methods and approaches to increasing the operational stability of perovskite photovoltaic devices are considered. The revealed paths of degradation processes occurring in complex metal halides (lead and tin) under the influence of light and elevated temperatures are important for further developments in the field of creating highly efficient and stable perovskite solar cells of a new generation. The investigated models of degradation are described both under the action of moisture and as a result of radiation ionization processes. The importance of solving the Dexter-Varley paradox, which takes into account the competition between the processes of displacement of IS0 states, as well as the delocalization of the resulting hole in the valence band, is emphasized. It was shown that by changing the force of pressure of the tape on the perovskite film, it was possible to achieve the maximum values of the light conversion efficiency of about 12.7%. It was found that the presence of charge carriers in the form of polarons can significantly affect the assessment of the degradation efficiency towards its increase. The data obtained can radically change the traditional ideas about the efficiency of photochemical reactions.

Enhanced Efficiency of Halide Perovskite Solar Cells by Solvent Engineering

2020 ◽  
Vol 15 (2) ◽  
pp. 243-249
Author(s):  
Xibin Liu ◽  
Jiayou Tao ◽  
Gaohua Liao ◽  
Zhijun Zou ◽  
Fen Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Composition ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Polar Molecules ◽  
High Quality ◽  
Solvent Engineering ◽  
Temperature Solution

During the process of the low-temperature solution fabrication, it always leads to high defects density at the grain boundaries and the interfaces, which are great barriers toward excellent solar cells. Different polar molecules of solvents are brought in to modify the surface composition by tuning the nucleation densities to obtain perovskite films with high crystallization quality. In this work, with efficiently exchanging intramolecular mechanism, high-quality MAPbI3-based perovskite films had been conveniently fabricated. Two kinds of polar molecules of dimethyl sulfoxide (DMSO) and N-methyl-2-pyrrolidone (NMP) were added to the dimethylformamide (DMF) solvent to result in perovskite films with high quality. As a result, the device with NMP solvent treatment outputs improved efficiency of 18.5% at the short-circuit current (Jsc) of 23.3 mA cm–2, with an open-circuit voltage (Voc) of 1.075 V and a fill factor of 77.1% under standard AM 1.5 solar illumination. This method of solvent engineering might provide a convenient way for the application of perovskite-based photovoltaic devices.

scholarly journals Elemental Mapping of Perovskite Solar Cells by Using Multivariate Analysis: An Insight into Degradation Processes

ChemSusChem ◽  
2016 ◽  
Vol 9 (18) ◽  
pp. 2673-2678 ◽  
Author(s):  
Stefania Cacovich ◽  
Giorgio Divitini ◽  
Christopher Ireland ◽  
Fabio Matteocci ◽  
Aldo Di Carlo ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Elemental Mapping ◽  
Degradation Processes ◽  
Insight Into

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

A new class of passivating molecules for perovskite solar cells: preliminary insights.

2020 ◽  
Author(s):  
Lucas Scalon ◽  
Francineide Lopes de Araújo ◽  
Caio Costa Oliveira ◽  
Ana Flávia Nogueira
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
New Class
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