Enhancing the planar heterojunction perovskite solar cell performance through tuning the precursor ratio

2016 ◽  
Vol 4 (20) ◽  
pp. 7943-7949 ◽  
Author(s):  
Jingjing Chang ◽  
Hai Zhu ◽  
Juanxiu Xiao ◽  
Furkan Halis Isikgor ◽  
Zhenhua Lin ◽  
...  
Keyword(s):  
Solar Cell ◽  
Open Circuit Voltage ◽  
Carrier Lifetime ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Solar Cell Performance ◽  
Precursor Ratio ◽  
Planar Heterojunction

The presence of excess PbI2 can affect the structure of perovskites and photovoltaic performance of perovskite solar cells. Increased open-circuit voltage could be achieved by introducing proper PbI2. However, shorter carrier lifetime and increased recombination and resistance were observed when an excess of PbI2 was used.

Modeling of Abnormal Hysteresis in CsPbBr3 based Perovskite Solar Cells

2021 ◽  
Vol 34 (1) ◽  
pp. 01-08
Author(s):  
B GopalKrishna ◽  
Sanjay Tiwari
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Simulation Study ◽  
Open Circuit Voltage ◽  
Layer Structure ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Perovskite Layer

Perovskite solar cells are emerging photovoltaic devices with PCE of above 25%. Perovskite are suitable light absorber materials in solar cells with excellent properties like appropriate band gap energy, long carrier lifetime and diffusion length, and high extinction coefficient. Simulation study is an important technique to understand working mechanisms of perovskites solar cells. The study would help develop efficient, stable PSCs experimentally. In this study, modeling of perovskite solar cell was carried out through Setfos software. The optimization of different parameters of layer structure of solar cell would help to achieve maximum light absorption in the perovskite layer of solar cell. Simulation study is based drift-diffusion model to study the different parameters of perovskite solar cell. Hysteresis is one of the factors in the perovskite solar cell which may influence the device performance. The measurement of abnormal hysteresis can be done by current-voltage curve during backward scan during simulation study. In backward scan, the measurement starts from biasing voltage higher than open circuit voltage and sweep to voltage below zero. The numerical simulation used to study the various parameters like open circuit voltage, short circuit current, fill factor, power conversion efficiency and hysteresis. The simulation results would help to understand the photophysics of solar cell physics which would help to fabricate highly efficient and stable perovskite solar cells experimentally.

Reduced open-circuit voltage loss for highly efficient low-bandgap perovskite solar cells via suppression of silver diffusion

2019 ◽  
Vol 7 (29) ◽  
pp. 17324-17333 ◽  
Author(s):  
Meiyue Liu ◽  
Ziming Chen ◽  
Yongchao Yang ◽  
Hin-Lap Yip ◽  
Yong Cao
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Energy Level ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Perovskite Layer ◽  
Low Bandgap ◽  
Voltage Loss

Ag diffused across the PCBM layer increased the trap density and down-shifted the energy level of the perovskite layer. Fortunately, PCBM/ZnO layer efficiently suppressed the Ag diffusion, resulting in a perovskite solar cell with PCE of 18.1%.

Carbon-Quantum-Dot-Hybridized NiOx Hole-Transport Layer Enables Efficient and Stable Planar p-i-n Perovskite Solar Cells with High Open-Circuit Voltage

2021 ◽  
Author(s):  
Xuefeng Xia ◽  
Dan Zhang ◽  
Xiaofeng Wang ◽  
Zonghu Xiao ◽  
Fan Li
Keyword(s):  
Solar Cell ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Hole Transport ◽  
Band Alignment ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Carbon Quantum Dot

In recent years, the nickel oxide (NiOx)-based planar p-i-n perovskite solar cell (PSC) has progressed rapidly. Nevertheless, poor electrical properties of NiOx, unoptimized band alignment between NiOx and perovskites, as...

A PbI2−xClx seed layer for obtaining efficient planar-heterojunction perovskite solar cells via an interdiffusion process

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9396-9403 ◽  
Author(s):  
Yohan Ko ◽  
Woo Yeol Choi ◽  
Yong Ju Yun ◽  
Yongseok Jun
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Seed Layer ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Interdiffusion Process ◽  
Planar Heterojunction

Investigated were the effects of the correlation between the chlorine and PbI2 contents on the perovskite solar cell performance.

scholarly journals Investigation of Well-Defined Pinholes in TiO2 Electron Selective Layers Used in Planar Heterojunction Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 181 ◽  
Author(s):  
Muhammad Talha Masood ◽  
Syeda Qudsia ◽  
Mahboubeh Hadadian ◽  
Christian Weinberger ◽  
Mathias Nyman ◽  
...  
Keyword(s):  
Solar Cell ◽  
Sol Gel ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Surface Recombination ◽  
Dip Coating ◽  
Device Performance ◽  
Tio2 Thin Films ◽  
Solar Cell Performance ◽  
Planar Heterojunction

The recently introduced perovskite solar cell (PSC) technology is a promising candidate for providing low-cost energy for future demands. However, one major concern with the technology can be traced back to morphological defects in the electron selective layer (ESL), which deteriorates the solar cell performance. Pinholes in the ESL may lead to an increased surface recombination rate for holes, if the perovskite absorber layer is in contact with the fluorine-doped tin oxide (FTO) substrate via the pinholes. In this work, we used sol-gel-derived mesoporous TiO2 thin films prepared by block co-polymer templating in combination with dip coating as a model system for investigating the effect of ESL pinholes on the photovoltaic performance of planar heterojunction PSCs. We studied TiO2 films with different porosities and film thicknesses, and observed that the induced pinholes only had a minor impact on the device performance. This suggests that having narrow pinholes with a diameter of about 10 nm in the ESL is in fact not detrimental for the device performance and can even, to some extent improve their performance. A probable reason for this is that the narrow pores in the ordered structure do not allow the perovskite crystals to form interconnected pathways to the underlying FTO substrate. However, for ultrathin (~20 nm) porous layers, an incomplete ESL surface coverage of the FTO layer will further deteriorate the device performance.

scholarly journals Probing the energy levels of perovskite solar cells via Kelvin probe and UV ambient pressure photoemission spectroscopy

2016 ◽  
Vol 18 (29) ◽  
pp. 19738-19745 ◽  
Author(s):  
J. R. Harwell ◽  
T. K. Baikie ◽  
I. D. Baikie ◽  
J. L. Payne ◽  
C. Ni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Open Circuit Voltage ◽  
Ambient Pressure ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Photoemission Spectroscopy ◽  
Kelvin Probe

We present a study of the energy levels present in a perovskite solar cell using Kelvin probe and UV air photoemission measurements. By constructing a detailed map of the energy levels in the system we are able to predict the maximum open circuit voltage of the solar cell.

The improvement of open circuit voltage by the sputtered TiO2 layer for efficient perovskite solar cell

Vacuum ◽  
2016 ◽  
Vol 128 ◽  
pp. 91-98 ◽  
Author(s):  
Sheng Ge ◽  
Haitao Xu ◽  
Wenzhen Wang ◽  
Runan Cao ◽  
Yanglin Wu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Tio2 Layer

Boosting the performance of perovskite solar cells through a novel active passivation method

2018 ◽  
Vol 6 (32) ◽  
pp. 15853-15858 ◽  
Author(s):  
Pengfei Wang ◽  
Jiao Wang ◽  
Xin Zhang ◽  
Haoliang Wang ◽  
Xiaolei Cui ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Potassium Halides

Potassium halides have recently garnered much attention, due to their improvement of perovskite solar cell performance.

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