Enhanced performance of mesostructured perovskite solar cells in ambient conditions with a composite TiO2–In2O3 electron transport layer

Apostolopoulou, Andigoni; Sygkridou, Dimitra; Rapsomanikis, Andreas; Kalarakis, A. N.; Σταθάτος, Ηλίας

doi:10.1016/j.solmat.2017.03.024

Cited by 33 publications

(17 citation statements)

References 46 publications

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“…In recent years, increased interest in organic devices, such as solar cells (SCs), was observed in both academia and industry, focusing on high efficiency and solution-based fabrication [1][2][3]. Comparing different configurations of polymer solar cells (PSCs), a classification into mesoscopic (n-i-p) PSCs, planar (n-i-p) PSCs, and inverted planar (p-i-n) PSCs can be made [4][5][6]. Considering the typical planar architecture, the addition of a mesoscopic layer complicates the manufacture process, while also requiring a high-temperature sintering operation, which is not compatible with polymer-based flexible substrates [7].…”

Section: Introductionmentioning

confidence: 99%

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

et al. 2020

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Poly(3,4-ethylenedioxythiophene:poly(styrenesulfonate) (PEDOT:PSS) water and toluene solutions were investigated in detail, taking into consideration their stability, wettability, transparency, and electrochemical properties, along with change polarity caused by dopant. As dopant, methanol, ethanol, and isopropanol were used with different dipole moments (1.70, 1.69, and 1.66 D) and dielectric constants (33.0, 24.5, and 18.0). Three techniques, i.e., spin coating, doctor blade coating, and spray coating, were employed to created PEDOT:PSS layers on glass, glass/indium tin oxide (ITO), and glass/fluorine-doped tin oxide (FTO) substrates with optimized technical parameters for each used equipment. All used PEDOT:PSS water and toluene solutions demonstrated good wetting properties with angles below 30° for all used surfaces. Values of the energy bandgap (Eg) of PEDOT:PSS investigated by cyclic voltammetry (CV) in solution showed increase energy Eg along with addition of alcohol to the mixture, and they were found in the range of 1.20 eV to 2.85 eV. The opposite tendency was found for the Eg value of the PEDOT:PSS layer created from water solution. The storage effect on PEDOT:PSS layers detected by CV affected only the lowest unoccupied molecular orbital (LUMO) level, thereby causing changes in the energy bandgap. Finally, simple devices were constructed and investigated by infrared (IR) thermographic camera to investigate the surface defects on the created PEDOT:PSS layers. Our study showed that a more stable PEDOT:PSS layer without pin-holes and defects can be obtained from water and toluene solutions with isopropanol via the spin coating technique with an optimal speed of 3000 rpm and time of 90 s.

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Section: Introductionmentioning

confidence: 99%

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

et al. 2020

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“…In comparison with the widely utilized vertical architecture of LED or solar cells, the planar transistor configuration offers an excellent platform to investigate the charge carrier injection and ion migration in MHPs, which could also assist in elucidating more underlying physics in the optoelectronics . Besides, given the aforementioned superior optoelectronic characteristics of MHPs, they can be integrated into organic‐semiconductor‐based or metal‐oxide‐based devices to modify and improve the interface for better device performance.…”

Section: Introductionmentioning

confidence: 99%

Metal Halide Perovskites: Synthesis, Ion Migration, and Application in Field‐Effect Transistors

Liu

Song

et al. 2018

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The past several years have witnessed tremendous developments of metal halide perovskite (MHP)-based optoelectronics. Particularly, the intensive research of MHP-based light-emitting diodes, photodetectors, and solar cells could probably reform the optoelectronic semiconductor industry. In comparison, in spite of the large intrinsic charge carrier mobility of MHPs, the development of MHP-based field-effect transistors (MHP-FETs) is relatively slow, which is essentially due to the gate-field screening effect induced by the ion migration and accumulation in MHP-FETs. This work mainly aims to summarize the recent important work on MHP-FETs and propose solutions in terms of the development bottleneck of perovskite-based transistors, in an attempt to boost the research of MHP transistors further. First, the advantages and potential applications of MHP-FETs are briefly introduced, which is followed by a detailed description of the MHP crystalline structure and various material fabrication techniques. Afterward, MHP-FETs are discussed, including transistors based on hybrid organic-inorganic perovskites, all-inorganic perovskites, and lead-free perovskites.

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“…Instead of doping TiO 2 , synthesizing ETL composite of two metal oxides with appropriate band edges is another approach in facilitating electron transport, offering better efficiency and minimizing recombination rate. ETL composites of SrTiO 3 /TiO 2 [28], BaTiO 3 /TiO 2 [29], and In 2 O 3 /TiO 2 [30] have been shown to improve the overall device efficiency. Nevertheless, it is critical to further optimize the suitable mixing ratio (molar ratio, volume ratio) in order to achieve high power conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Processed TiOx/Zn1−xCdxS Nanocomposite for Efficient MAPbIxCl1−x Perovskite and PCDTBT:PC70BM Polymer Solar Cells

et al. 2019

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The majority of high-performance perovskite and polymer solar cells consist of a TiO2 electron transport layer (ETL) processed at a high temperature (>450 °C). Here, we demonstrate that low-temperature (80 °C) ETL thin film of TiOx:Zn1−xCdxS can be used as an effective ETL and its band energy can be tuned by varying the TiOx:Zn1−xCdxS ratio. At the optimal ratio of 50:50 (vol%), the MAPbIxCl1−x perovskite and PCBTBT:PC70BM polymer solar cells achieved 9.79% and 4.95%, respectively. Morphological and optoelectronic analyses showed that tailoring band edges and homogeneous distribution of the local surface charges could improve the solar cells efficiency by more than 2%. We proposed a plausible mechanism to rationalize the variation in morphology and band energy of the ETL.

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Enhanced performance of mesostructured perovskite solar cells in ambient conditions with a composite TiO2–In2O3 electron transport layer

Cited by 33 publications

References 46 publications

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

Metal Halide Perovskites: Synthesis, Ion Migration, and Application in Field‐Effect Transistors

Low-Temperature Processed TiOx/Zn1−xCdxS Nanocomposite for Efficient MAPbIxCl1−x Perovskite and PCDTBT:PC70BM Polymer Solar Cells

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