scholarly journals Enhanced Photovoltaic Properties of Perovskite Solar Cells by Employing Bathocuproine/Hydrophobic Polymer Films as Hole-Blocking/Electron-Transporting Interfacial Layers

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 42
Author(s):  
Guan-Zhi Liu ◽  
Chi-Shiuan Du ◽  
Jeng-Yue Wu ◽  
Bo-Tau Liu ◽  
Tzong-Ming Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Indium Tin Oxide ◽  
Storage Stability ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Lead Iodide ◽  
Photovoltaic Properties ◽  
Interfacial Layers ◽  
Hydrophobic Polymers ◽  
And Storage

In this study, we improved the photovoltaic (PV) properties and storage stabilities of inverted perovskite solar cells (PVSCs) based on methylammonium lead iodide (MAPbI3) by employing bathocuproine (BCP)/poly(methyl methacrylate) (PMMA) and BCP/polyvinylpyrrolidone (PVP) as hole-blocking and electron-transporting interfacial layers. The architecture of the PVSCs was indium tin oxide/poly(3,4-ethylenedioxythiophene):polystyrenesulfonate/MAPbI3/[6,6]-phenyl-C61-butyric acid methyl ester/BCP based interfacial layer/Ag. The presence of PMMA and PVP affected the morphological stability of the BCP and MAPbI3 layers. The storage-stability of the BCP/PMMA-based PVSCs was enhanced significantly relative to that of the corresponding unmodified BCP-based PVSC. Moreover, the PV performance of the BCP/PVP-based PVSCs was enhanced when compared with that of the unmodified BCP-based PVSC. Thus, incorporating hydrophobic polymers into BCP-based hole-blocking/electron-transporting interfacial layers can improve the PV performance and storage stability of PVSCs.

scholarly journals Enhanced Photovoltaic Properties of Perovskite Solar Cells by Employing Bathocuproine/Hydrophobic Polymer Films as Hole-Blocking/Electron-Transporting Interfacial Layers

2020 ◽  
Author(s):  
Guan-Zhi Liu ◽  
Chi-Shiuan Du ◽  
Jeng-Yue Wu ◽  
Bo-Tau Liu ◽  
Tzong-Ming Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Indium Tin Oxide ◽  
Storage Stability ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Lead Iodide ◽  
Photovoltaic Properties ◽  
Interfacial Layers ◽  
Hydrophobic Polymers ◽  
And Storage

In this study, we improved the photovoltaic (PV) properties and storage stabilities of inverted perovskite solar cells (PVSCs) based on methylammonium lead iodide (MAPbI3) by employing bathocuproine (BCP)/poly(methyl methacrylate) (PMMA) and BCP/polyvinylpyrrolidone (PVP) as hole-blocking and electron-transporting interfacial layers. The architecture of the PVSCs was indium tin oxide/poly(3,4-ethylenedioxythiophene):polystyrenesulfonate/MAPbI3/[6,6]-phenyl-C61-butyric acid methyl ester/BCP:PMMA or BCP:PVP/Ag. The presence of PMMA and PVP affected the morphological stability of the BCP and MAPbI3 layers. The storage-stability of the BCP/PMMA-based PVSCs was enhanced significantly relative to that of the corresponding unmodified BCP-based PVSC. Moreover, the PV performance of the BCP/PVP-based PVSCs was enhanced when compared with that of the unmodified BCP-based PVSC. Thus, incorporating hydrophobic polymers into BCP-based hole-blocking/electron-transporting interfacial layers can improve the PV performance and storage stability of PVSCs.

scholarly journals Enhanced Open-Circuit Voltage in Perovskite Solar Cells with Open-Cage [60]Fullerene Derivatives as Electron-Transporting Materials

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1314 ◽  
Author(s):  
Edison Castro ◽  
Albert Artigas ◽  
Anna Pla-Quintana ◽  
Anna Roglans ◽  
Fang Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molecular Orbital ◽  
Indium Tin Oxide ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Open Circuit ◽  
Fullerene Derivatives ◽  
Lowest Unoccupied Molecular Orbital ◽  
Conversion Efficiencies

The synthesis, characterization, and incorporation of open-cage [60]fullerene derivatives as electron-transporting materials (ETMs) in perovskite solar cells (PSCs) with an inverted planar (p-i-n) structure is reported. Following optical and electrochemical characterization of the open-cage fullerenes 2a–c, p-i-n PSCs with a indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS)/perovskite/fullerene/Ag structure were prepared. The devices obtained from 2a–b exhibit competitive power conversion efficiencies (PCEs) and improved open-circuit voltage (Voc) values (>1.0 V) in comparison to a reference cell based on phenyl-C61-butyric-acid methyl-ester (PC61BM). These results are rationalized in terms of a) the higher passivation ability of the open-cage fullerenes with respect to the other fullerenes, and b) a good overlap between the highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) levels of 2a–b and the conduction band of the perovskite.

scholarly journals Hysteresis Passivation in Planar Perovskite Solar Cells Utilizing Facile Chemical Vapor Deposition Process and PCBM Interlayer

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4508
Author(s):  
Chongqiu Yang ◽  
Xiaobiao Shan ◽  
Tao Xie
Keyword(s):  
Solar Cells ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Chemical Vapor ◽  
Grain Structure ◽  
Lead Iodide

Low-cost, high-efficiency perovskite solar cells (PSCs) have the distinguished potential to be next commercialized photovoltaic devices. Chemical vapor deposition (CVD) process was regarded as an excellent choice as compared to solution deposition technique, however, the photovoltaic and stable performance of the former lags behind that of the latter. In this work, we propose a facile CVD pattern to fabricate PSCs, substrates covered by lead iodide (PbI2) sandwich-surrounded by the source methyl-ammonium iodide (CH3NH3I, MAI) powder. Heat and mass transfer, surface reactions are involved in the CVD deposition procedure. Numerical calculations present a uniform distribution of MAI vapor, contributing to homogeneous perovskite films with comparable surface morphologies, crystal structures and photovoltaic performances, despite of the notorious hysteresis. Herein, a PCBM ([6,6]-Phenyl C61 butyric acid methyl ester) interlayer is introduced before the PbI2 coating and the CVD process. Results show that even suffered from the torturous CVD procedure, the PCBM interlayer still works to passivating the bulk and interfacial recombination, reducing the hysteresis, improving the grain structure of perovskite films. Hence, the photovoltaic performance of PSCs enhances by 30%, and the filling factor difference between the forward and the reverse scan reduces to 6%.

Influence of Cl Incorporation in Perovskite Precursor on the Crystal Growth and Storage Stability of Perovskite Solar Cells

2019 ◽  
Vol 11 (6) ◽  
pp. 6022-6030 ◽  
Author(s):  
Hui Zhang ◽  
Yifan Lv ◽  
Jinpei Wang ◽  
Huili Ma ◽  
Zhengyi Sun ◽  
...  
Keyword(s):  
Solar Cells ◽  
Crystal Growth ◽  
Storage Stability ◽  
Perovskite Solar Cells ◽  
And Storage

scholarly journals Effect of Carrier Transport in NiO on the Photovoltaic Properties of Lead Iodide Perovskite Solar Cells

2017 ◽  
Vol 85 (5) ◽  
pp. 231-235 ◽  
Author(s):  
Masatoshi YANAGIDA ◽  
Lisa SHIMOMOTO ◽  
Yasuhiro SHIRAI ◽  
Kenjiro MIYANO
Keyword(s):  
Solar Cells ◽  
Carrier Transport ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Photovoltaic Properties

scholarly journals Thickness Optimization and Photovoltaic Properties of Bulk Heterojunction Solar Cells Based on PFB–PCBM Layer

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5915
Author(s):  
Sayed Izaz Uddin ◽  
Muhammad Tahir ◽  
Fakhra Aziz ◽  
Mahidur R. Sarker ◽  
Fida Muhammad ◽  
...  
Keyword(s):  
Solar Cells ◽  
Indium Tin Oxide ◽  
Bulk Heterojunction ◽  
Acid Methyl Ester ◽  
Cost Effective ◽  
Open Circuit ◽  
Active Layer Thickness ◽  
Photovoltaic Properties ◽  
Effective Spin ◽  
Bhj Device

We report on the fabrication and study of bulk heterojunction (BHJ) solar cells based on a novel combination of a donor–acceptor poly(9,9-dioctylfluorenyl-2,7-diyl)-co-(N,N0-diphenyl)-N,N′di(p-butyl-oxy-pheyl)-1,4-diamino-benzene) (PFB) and [6, 6]-phenyl-C61-butyric acid methyl ester (PCBM) blend composed of 1:1 by volume. indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate (PEDOT:PSS)/PFB–PCBM/Ag BHJ solar cells are fabricated by a facile cost-effective spin-coating technique. The thickness of the active film (PFB–PCBM) plays an important role in the efficiency of light absorption, exciton creation, and dissociation into free charges that results in higher power conversion efficiency (PCE). In order to optimize the PCE as a function of active layer thickness, a number of solar cells are fabricated with different thicknesses of PFB–PCBM films at 120, 140, 160, 180, and 200 nm, and their photovoltaic characteristics are investigated. It is observed that the device with a 180 nm thick film demonstrates a maximum PCE of 2.9% with a fill factor (FF) of 53% under standard testing conditions (STC) (25 °C, 1.5 AM global, and 100 mW/cm2). The current–voltage (I-V) properties of the ITO/PEDOT:PSS/PFB–PCBM/Ag BHJ devices are also measured in dark conditions to measure and understand different parameters of the heterojunction. Atomic force microscopy (AFM) and ultraviolet-visible (UV-vis) absorption spectroscopy for the PFB–PCBM film of optimal thickness (180 nm) are carried out to understand the effect of surface morphology on the PCE and bandgap of the blend, respectively. The AFM micrographs show a slightly non-uniform and rough surface with an average surface roughness (Ra) of 29.2 nm. The UV-vis measurements of the PFB–PCBM blend exhibit a reduced optical bandgap of ≈2.34 eV as compared to that of pristine PFB (2.88 eV), which results in an improved absorption of light and excitons generation. The obtained results for the ITO/PEDOT:PSS/PFB–PCBM (180 nm)/Ag BHJ device are compared with the ones previously reported for the P3HT–PCBM blend with the same film thickness. It is observed that the PFB–PCBM-based BHJ device has shown two times higher open circuit voltage (Voc) and, hence, enhanced the efficiency.

Photoinduced ion-redistribution in CH3NH3PbI3 perovskite solar cells

2020 ◽  
Vol 22 (43) ◽  
pp. 25118-25125
Author(s):  
Masatoshi Yanagida ◽  
Yasuhiro Shirai ◽  
Dhruba B. Khadka ◽  
Kenjiro Miyano
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Photoinduced Absorption ◽  
Acid Methyl ◽  
Ionic Motion ◽  
Aluminum Doped Zinc Oxide ◽  
Butyric Acid Methyl Ester

We use photoinduced absorption spectroscopy (PAS) to study the ionic motion in CH3NH3PbI3 perovskite solar cells, consisting of indium tin oxide (ITO)/NiOx/perovskite/phenyl-C61-butyric-acid–methyl ester (PCBM)/aluminum-doped zinc oxide (AZO)/ITO.

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