scholarly journals Water/Alcohol Soluble Thickness-Insensitive Hyperbranched Perylene Diimide Electron Transport Layer Improving the Efficiency of Organic Solar Cells

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 655 ◽  
Author(s):  
Dan Zhou ◽  
Fei Yang ◽  
Yuancheng Qin ◽  
Rong Zhong ◽  
Haitao Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Large Scale ◽  
Transport Layer ◽  
Perylene Diimide ◽  
Commercial Application ◽  
Electron Transport Layer ◽  
Environment Friendly ◽  
Tetraethylene Pentamine ◽  
Water Alcohol

The electron transport layer (ETL) is very crucial for enhancing the device performance of polymer solar cells (PSCs). Meanwhile, thickness-insensitive and environment-friendly water/alcohol soluble processing are two essential requirements for large-scale roll-to-roll commercial application. Based on this, we designed and synthesized two new n-type ETLs with tetraethylene pentamine or butyl sulfonate sodium substituted tetraethylene pentamine as the branched side chains and high electron affinities perylene diimide (PDI) as the central core, named as PDIPN and PDIPNSO3Na. Encouragingly, both PDIPN and PDIPNSO3Na can effectively reduce the interfacial barrier and improve the interfacial contact. In addition, both of them can exhibit strong n-type self-doping effects, especially the PDIPN with higher density of negative charge. Consequently, compared to bare ITO, the PCE of the devices with ITO/PDIPN and ITO/PDIPNSO3Na ETLs has increased to 3–4 times. Our research results indicate that n-type self-doping PDI-based ETL PDIPN and PDIPNSO3Na could be promising candidates for ETL in environment-friendly water/alcohol soluble processing large-scale PSCs.

Performance of Air-Stable Cs2SnI6 Perovskite as Electron Transport Layer in Inverted Bulk Heterojunction Solar Cell

2020 ◽  
Vol 860 ◽  
pp. 28-33
Author(s):  
Rany Khaeroni ◽  
Herman ◽  
Priastuti Wulandari
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Chemical Process ◽  
Large Scale ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Open Circuit ◽  
Transport Layer ◽  
Electron Transport Layer

In recent years, perovskite material has been extensively studied due to its unique physical properties and promising application in the third generation of solar cells. In particular, Sn-based perovskite has been considered to replace Pb-based perovskite because of the toxic effects and it can lead to other serious problems related to the environment. Cs2SnI6 perovskite has been known to be synthesized in a simple chemical process and it can be produced on a large scale. Moreover, this material is also oxygen and moisture stable due to the high oxidation state of tin. In this study, we synthesize air-stable Cs2SnI6 perovskite by the use of the wet chemical process at room temperature. Next, we attempt to fabricate the inverted bulk heterojunction solar cells incorporated Cs2SnI6 as electron transport layer in the configuration of ITO/ZnO/Cs2SnI6/P3HT:PCBM/PEDOT:PSS/Ag to improve device performance. The Cs2SnI6 perovskite shows an Fm-3m space group with a cubic lattice parameter of 11.62Å confirmed by X-Ray Diffraction (XRD) measurement, while UV-Vis measurement indicates this type of perovskite has direct band gap ~3.1 eV. The fabricated solar cell device reveals the enhancement in current density at short circuit condition (Jsc) from 64.69 mA/cm2 to 77.02 mA/cm2 with the addition of 2.25 mg/ml Cs2SnI6 along with the enhancement of power conversion efficiency (PCE) from 7.05% to 9.75% as characterized by J-V measurement. In our case, the voltage at open circuit condition (Voc) of the device does not perform significant improvement. Besides, it is found that the solar cell devices are quite stable even after exposure in the air for six weeks after fabrication, as indicated by PCE performance.

scholarly journals New generation perovskite solar cells with solution-processed amino-substituted perylene diimide derivative as electron-transport layer

2016 ◽  
Vol 4 (22) ◽  
pp. 8724-8733 ◽  
Author(s):  
Hua Zhang ◽  
Lingwei Xue ◽  
Junbo Han ◽  
Yong Qing Fu ◽  
Yan Shen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Perylene Diimide ◽  
Electron Transport Layer ◽  
Solution Processed ◽  
Planar Heterojunction ◽  
New Generation ◽  
First Time

In this study, for the first time, we introduced amino-substituted perylene diimide derivative (N-PDI) as an alternative electron transport layer (ETL) to replace the commonly used TiO2 in planar heterojunction perovskite solar cells.

Performance improvement of perovskite solar cells by employing a CdSe quantum dot/PCBM composite as an electron transport layer

2017 ◽  
Vol 5 (33) ◽  
pp. 17499-17505 ◽  
Author(s):  
Xiaofeng Zeng ◽  
Tingwei Zhou ◽  
Chongqian Leng ◽  
Zhigang Zang ◽  
Ming Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Quantum Dot ◽  
Large Scale ◽  
Perovskite Solar Cells ◽  
Device Fabrication ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Performance Measurements ◽  
Cdse Quantum Dot

Organic–inorganic hybrid perovskite solar cells with a CdSe quantum dot/PCBM composite as an electron transport layer are reported by materials synthesis, characterization, device fabrication, performance measurements and large-scale first-principles calculations.

Achieving efficient inverted perovskite solar cells with excellent electron transport and stability by employing a ladder-conjugated perylene diimide dimer

2019 ◽  
Vol 7 (42) ◽  
pp. 24191-24198 ◽  
Author(s):  
Helin Wang ◽  
Fu Yang ◽  
Yuren Xiang ◽  
Shuai Ye ◽  
Xiao Peng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Perylene Diimide ◽  
Electron Transport Layer

A ladder-conjugated perylene diimide dimer containing an indacenodithiophene unit was developed and used as a high efficiency electron transport layer in inverted perovskite solar cells.

A perylene diimide-based electron transport layer enabling efficient inverted perovskite solar cells

2018 ◽  
Vol 6 (35) ◽  
pp. 16868-16873 ◽  
Author(s):  
Kui Jiang ◽  
Fei Wu ◽  
Hui Yu ◽  
Yanqing Yao ◽  
Guangye Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Perylene Diimide ◽  
Electron Transport Layer ◽  
Interfacial Material

High efficiencies of 16.29% and 18.78% are obtained in inverted PSCs using TPE-PDI4 as an electron transporting material and interfacial material, respectively.

scholarly journals Ultrathin and compact electron transport layer made from novel water-dispersed Fe3O4 nanoparticles to accomplish UV-stable perovskite solar cells

2021 ◽  
Author(s):  
Song Fang ◽  
Bo Chen ◽  
Bangkai Gu ◽  
Linxing Meng ◽  
Hao Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Perovskite Material ◽  
Main Factors ◽  
Induced Decomposition

UV induced decomposition of perovskite material is one of main factors to severely destroy perovskite solar cells for instability. Here we report a UV stable perovskite solar cell with a...

scholarly journals The Influence of the Thickness of Compact TiO2 Electron Transport Layer on the Performance of Planar CH3NH3PbI3 Perovskite Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3295
Author(s):  
Andrzej Sławek ◽  
Zbigniew Starowicz ◽  
Marek Lipiński
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Transport Layer ◽  
Electron Transport Layer

In recent years, lead halide perovskites have attracted considerable attention from the scientific community due to their exceptional properties and fast-growing enhancement for solar energy harvesting efficiency. One of the fundamental aspects of the architecture of perovskite-based solar cells (PSCs) is the electron transport layer (ETL), which also acts as a barrier for holes. In this work, the influence of compact TiO2 ETL on the performance of planar heterojunction solar cells based on CH3NH3PbI3 perovskite was investigated. ETLs were deposited on fluorine-doped tin oxide (FTO) substrates from a titanium diisopropoxide bis(acetylacetonate) precursor solution using the spin-coating method with changing precursor concentration and centrifugation speed. It was found that the thickness and continuity of ETLs, investigated between 0 and 124 nm, strongly affect the photovoltaic performance of PSCs, in particular short-circuit current density (JSC). Optical and topographic properties of the compact TiO2 layers were investigated as well.

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