scholarly journals Modeling of Intensity-Modulated Photocurrent/Photovoltage Spectroscopy: Effect of Mobile Ions on the Dynamic Response of Perovskite Solar Cells

2019 ◽  
Vol 123 (50) ◽  
pp. 30077-30087 ◽  
Author(s):  
David Bernhardsgrütter ◽  
Matthias M. Schmid
Keyword(s):  
Solar Cells ◽  
Dynamic Response ◽  
Perovskite Solar Cells ◽  
Intensity Modulated ◽  
Mobile Ions

scholarly journals Pathways toWards 30% Efficient Single‐Junction Perovskite Solar Cells and the Role of Mobile Ions

Solar RRL ◽  
2021 ◽  
Author(s):  
Jonas Diekmann ◽  
Pietro Caprioglio ◽  
Moritz H. Futscher ◽  
Vincent M. Le Corre ◽  
Sebastian Reichert ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Single Junction ◽  
Mobile Ions

The detrimental effect of excess mobile ions in planar CH3NH3PbI3 perovskite solar cells

2016 ◽  
Vol 4 (33) ◽  
pp. 12748-12755 ◽  
Author(s):  
Yuanhang Cheng ◽  
Ho-Wa Li ◽  
Jian Qing ◽  
Qing-Dan Yang ◽  
Zhiqiang Guan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Detrimental Effect ◽  
Perovskite Solar Cells ◽  
Device Performance ◽  
Mobile Ions ◽  
Device Operation

Mobile ions not only have detrimental effects on device performance but also trigger the degradation of perovskite during device operation.

The Impact of Mobile Ions on the Steady-State Performance of Perovskite Solar Cells

2019 ◽  
Vol 124 (1) ◽  
pp. 219-229 ◽  
Author(s):  
Nandi Wu ◽  
Daniel Walter ◽  
Andreas Fell ◽  
Yiliang Wu ◽  
Klaus Weber
Keyword(s):  
Solar Cells ◽  
Steady State ◽  
Perovskite Solar Cells ◽  
Mobile Ions ◽  
The Impact ◽  
Steady State Performance

Diffusion Dynamics of Mobile Ions Hidden in Transient Optoelectronic Measurement in Planar Perovskite Solar Cells

2020 ◽  
Vol 3 (9) ◽  
pp. 8330-8337
Author(s):  
Hao-Yi Wang ◽  
Jia-Shang Zhao ◽  
Yusheng Li ◽  
Yu-Qing Zou ◽  
Man Yu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Diffusion Dynamics ◽  
Mobile Ions ◽  
Optoelectronic Measurement

scholarly journals Revealing Dynamic Effects of Mobile Ions in Halide Perovskite Solar Cells Using Time‐Resolved Microspectroscopy

Small Methods ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 2000731
Author(s):  
Weijian Chen ◽  
Zhixing Gan ◽  
Martin A. Green ◽  
Baohua Jia ◽  
Xiaoming Wen
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Dynamic Effects ◽  
Time Resolved ◽  
Halide Perovskite ◽  
Mobile Ions

Origin of Degradation in Perovskite Solar Cells by Intensity Modulated Photovoltage Spectroscopy Measurement (IMVS)

2021 ◽  
Vol 1028 ◽  
pp. 133-137
Author(s):  
Adhita Asma Nurunnizar ◽  
Alvin Fariz ◽  
Herman ◽  
Rahmat Hidayat
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Conversion Efficiency ◽  
Cell Structure ◽  
Perovskite Solar Cells ◽  
Nyquist Plot ◽  
Frequency Range ◽  
Intensity Modulated ◽  
Transient Photovoltage ◽  
Lower Frequency Range

Perovskite solar cells (PSCs) based on lead halide perovskite have attracted much attention owing to the fast development of their power conversion efficiency (PCE) from 3.8% to 25%. Various factors play important roles in affecting the conversion efficiency of PSCs, such as charge carrier generation, transport, recombination, and collection. In addition, the presence of interfacial defects has also a crucial effect in charge carrier transfer and recombination processes. However, the origin and mechanism of interfacial charge recombinations in PSCs are still not comprehensively investigated. For that purpose, we have performed intensity-modulated photovoltage spectroscopy (IMVS) and transient photovoltage (TPV) measurements of PSCs, which were fabricated with FTO/c-TiO2/mp-TiO2/Perovskite/PTAA/Au cell structure. The solar cell (J-V) characteristics of the PSCs on the day-1, day-2, day-3, and day-6 after the cell fabrication, indicating a significant degradation of the cell with time. The Nyquist plots of IMVS measurement on the same day as the J-V measurement seem to be composed of two semicircles at a lower frequency range and a higher frequency range. The semicircle at the lower frequency range enlarged on the day-6 measurement, but the semicircle at higher frequency decreased. The change of this Nyquist plot is in agreement with a significant decrease in the J-V curves. The semicircle at lower frequency may be assigned to the ion diffusion or migration. Therefore, cell degradation may be caused by the liberation of ions (including iodide) from the surface of the perovskite crystal structure. It then increases recombination loss due to back charge transfer from TiO2 to perovskite as indicated by the changing of the semicircle at high frequency into a smaller semicircle. Therefore, the present results reemphasize that the improvement of PSC stability needs the prevention of ions liberations from the surface by introducing passivation substances. In addition, the results also show the practical usefulness of IMVS for inspecting PSC degradation due to such an ion liberation process.

An Investigation into Electric Field-Modulated Photoluminescence of Perovskite solar cells

MRS Advances ◽  
2017 ◽  
Vol 2 (53) ◽  
pp. 3099-3104
Author(s):  
Zhihua Xu
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Perovskite Solar Cells ◽  
Internal Electric Field ◽  
Ion Migration ◽  
Migration Mechanism ◽  
Halide Perovskites ◽  
Mobile Ions ◽  
Voltage Scanning

ABSTRACTElectric field-modulated photoluminescence (PL) of perovskite solar cells is investigated to gain deeper insight about the role of the mobile ions in organometal halide perovskites. The PL intensity of perovskite solar cells show significant dependence on the polarity of the external electric field and the voltage scanning direction. This phenomenon is discussed in the framework of an ion migration mechanism, which has been widely accounted for the current density-voltage (J-V) hysteresis in perovskite solar cells. The result suggests that the mobile ions not only change the internal electric field of perovskite solar cells, but also have an effect on the recombination of photogenerated charge carriers.

Light intensity modulated photoluminescence for rapid series resistance mapping of perovskite solar cells

Nano Energy ◽  
2020 ◽  
Vol 73 ◽  
pp. 104755
Author(s):  
Kevin J. Rietwyk ◽  
Boer Tan ◽  
Adam Surmiak ◽  
Jianfeng Lu ◽  
David P. McMeekin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Intensity ◽  
Series Resistance ◽  
Perovskite Solar Cells ◽  
Intensity Modulated

scholarly journals Quantification of ion migration in CH3NH3PbI3 perovskite solar cells by transient capacitance measurements

2019 ◽  
Vol 6 (7) ◽  
pp. 1497-1503 ◽  
Author(s):  
Moritz H. Futscher ◽  
Ju Min Lee ◽  
Lucie McGovern ◽  
Loreta A. Muscarella ◽  
Tianyi Wang ◽  
...  
Keyword(s):  
Activation Energy ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Energy Concentration ◽  
Ion Migration ◽  
Capacitance Measurements ◽  
Ion Drift ◽  
Transient Capacitance ◽  
Mobile Ions ◽  
And Diffusion

We quantify activation energy, concentration, and diffusion coefficient of mobile ions in MAPbI3 perovskite solar cells using transient ion-drift measurements.

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