Tailored PEDOT:PSS hole transport layer for higher performance in perovskite solar cells: Enhancement of electrical and optical properties with improved morphology

Reza, Khan Mamun; Gurung, Ashim; Bahrami, Behzad; Mabrouk, Sally; Elbohy, Hytham; Pathak, Rajesh; Chen, Ke; Chowdhury, Ashraful Haider; Rahman, Tawabur; Letourneau, Steven; Yang, Hao; Saianand, Gopalan; Elam, Jeffrey W.; Darling, Seth B.; Qiao, Qiquan

doi:10.1016/j.jechem.2019.09.014

Cited by 109 publications

(79 citation statements)

References 63 publications

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“…Several strategies have been developed to overcome the aforementioned issues associated with the solution processing of multilayer structures. Among them, choosing an appropriate HTL is a crucial factor for carrier balance of the multilayer structure [ 15 , 16 ]. Prior to this, poly(bis(4-butypheny)-bis(phenyl)benzidine, poly-TPD) is the most commonly used due to a high hole mobility (1.0 × 10 −4 cm 2 /V·s) with the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels of −5.2 and −2.3 eV, respectively, and a high-quality film surface [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Using Thermally Crosslinkable Hole Transporting Layer to Improve Interface Characteristics for Perovskite CsPbBr3 Quantum-Dot Light-Emitting Diodes

et al. 2020

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In this paper, a thermally crosslinkable 9,9-Bis[4-[(4-ethenylphenyl)methoxy]phenyl]-N2,N7-di-1-naphthalenyl-N2,N7-diphenyl-9H-fluorene-2,7-diamine (VB-FNPD) film served as the hole transporting layer (HTL) of perovskite CsPbBr3 quantum-dot light-emitting diodes (QD-LEDs) was investigated and reported. The VB-FNPD film crosslinked at various temperatures in the range of 100~230 °C followed by a spin-coating process to improve their chemical bonds in an attempt to resist the erosion from the organic solvent in the remaining fabrication process. It is shown that the device with VB-FNPD HTL crosslinking at 170 °C has the highest luminance of 7702 cd/m2, the maximum current density (J) of 41.98 mA/cm2, the maximum current efficiency (CE) of 5.45 Cd/A, and the maximum external quantum efficiency (EQE) of 1.64%. Our results confirm that the proposed thermally crosslinkable VB-FNPD is a candidate for the HTL of QD-LEDs.

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Section: Introductionmentioning

confidence: 99%

Using Thermally Crosslinkable Hole Transporting Layer to Improve Interface Characteristics for Perovskite CsPbBr3 Quantum-Dot Light-Emitting Diodes

et al. 2020

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“…In the standard OSC structure, a thin electron extraction material, such as LiF [23], carbon quantum dots that are mixed with ZnO nanorods [24] is used as the EEL, and an n-type metal oxide, such as ZnO, is used as an optical spacer and EEL [25]. Polymeric materials, such as poly (3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS), are commonly used for the HEL of OSCs and perovskite solar cells (PSCs) [26]. However, PEDOT:…”

Section: Introductionmentioning

confidence: 99%

Enhanced Operating Temperature Stability of Organic Solar Cells with Metal Oxide Hole Extraction Layer

et al. 2020

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Organic solar cells (OSCs) are promising renewable energy sources for replacing fossil fuels. The power conversion efficiency (PCE) of OSCs has increased based on tremendous effort in material and device engineering. Still, the stability of OSC, such as long lifetime, negative temperature coefficient, must be enhanced for commercialization. In this study, we investigated OSC performance at a high operating temperature near 300–420 K, which are typical temperature regions in photovoltaic applications, with a different hole-extraction layer (HEL). The metal oxide-based HEL, MoO3, exhibited stable operating properties with a PCE drop rate of −0.13%/°C, as compared to polymeric HEL, PEDOT:PSS (−0.20%/°C). This performance reduction of polymeric HEL originated from the degradation of the interface in contact with PEDOT:PSS, as compared to the robust inorganic metal oxide HEL.

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“…11 The removal of PSS in PEDOT:PSS provides a PCE of about 18.18% due to increase in perovskite crystal grain size. 12 Conjugated polymeric HTMs have proven to be good alternatives to spiro-OMeTAD due to their better hole-collection ability. 13 The P3HT polymer as an interlayer achieves 6.49% with better hole-extraction capability in CsPbBr 3 solar cell devices.…”

Section: Introductionmentioning

confidence: 99%

Investigating ultrafast carrier dynamics in perovskite solar cells with an extended π-conjugated polymeric diketopyrrolopyrrole layer for hole transportation

et al. 2020

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Tailored PEDOT:PSS hole transport layer for higher performance in perovskite solar cells: Enhancement of electrical and optical properties with improved morphology

Abstract: Low-temperature processed inorganic hole transport layer for efficient and stable mixed Pb-Sn low-bandgap perovskite solar cells

Cited by 109 publications

References 63 publications

Using Thermally Crosslinkable Hole Transporting Layer to Improve Interface Characteristics for Perovskite CsPbBr3 Quantum-Dot Light-Emitting Diodes

Using Thermally Crosslinkable Hole Transporting Layer to Improve Interface Characteristics for Perovskite CsPbBr3 Quantum-Dot Light-Emitting Diodes

Enhanced Operating Temperature Stability of Organic Solar Cells with Metal Oxide Hole Extraction Layer

Investigating ultrafast carrier dynamics in perovskite solar cells with an extended π-conjugated polymeric diketopyrrolopyrrole layer for hole transportation

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