Suppression of surface defects to achieve hysteresis-free inverted perovskite solar cells <i>via</i> quantum dot passivation

Hanmandlu, Chintam; Vyshnava, Satyanarayana Swamy; Singh, Anupriya; Chen, Hsin‐An; Liu, Chi-Ching; Lai, Chao‐Sung; Mohapatra, Anisha; Pao, Chun‐Wei; Chen, Peilin; Chu, Chia‐Chi

doi:10.1039/c9ta12904a

Cited by 72 publications

(53 citation statements)

References 52 publications

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“…In contrast to early research on the structure of conventional PSCs, the inverted planar structures (n-i-p or p-i-n) have been investigated owing to their ease of manufacturing, low-temperature and low-cost processing, and compatibility with flexible beds in PSC [2][3][4]. According to several studies, inverted planar devices have shown efficiency of above 20% for producing conventional structures, which is very promising [5,6]. To the best of our knowledge, despite recent advances in PSCs, inverted planar PSCs have garnered less attention and only a few studies have been conducted in this field.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Perovskite Solar Cells Optimized by the Inverse Planar Method in SILVACO: 3D Electrical and Optical Models

Fakhri

Naderi²,

Farkoush

et al. 2021

Energies

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In recent years, perovskite solar cells (PSCs), often referred to as the third generation, have rapidly proliferated. Their most prominent deficiencies are their low efficiency and poor stability. To enhance their productivity, a combination of silicon and perovskite is employed. Here, we present a 3D simulation analysis of various electrical and optical properties of PSCs using the SILVACO simulation software. Using the inverted planar method with inorganic transport materials and the proper selection of anti-reflective coatings with a back contact layer increases the efficiency of PSCs to 28.064%, and enhances their stability without using silicone composites. Several materials, including CaF2, SiO2, and Al2O3, with various thicknesses have been employed to investigate the effect of anti-reflective coatings, and to improve the efficiency of the simulated PSC. The best thickness of the absorbent layer is 500 nm, using a CaF2 anti-reflective coating with an optimal thickness of 110 nm. A polymer composition of Spiro-OMeTAD and inorganic materials Cu2O and NiOx was used as the hole transport material (HTM) and inorganic ZnO was employed as the electron transport material (ETM) to optimize the solar cell efficiency, and an optimized thickness was considered for these materials. Yields of 29.261, 28.064 and 27.325% were obtained for Spiro-OMeTAD/ZnO, Cu2O/ZnO and NiOx/ZnO, respectively. Thus, Spiro-OMeTAD yields the highest efficiency. This material is highly expensive with a complex synthesis and high degradability. We proposed to employ Cu2O to alleviate these problems; however, this reduces the efficiency by 1.197%. As a graphene connector has high flexibility, reduces cell weight, and is cheaper and more accessible compared to other metals, it was regarded as an optimal alternative. The simulation results indicate that using the inverted planar method with inorganic transport materials for graphene-based PSCs is highly promising.

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Section: Introductionmentioning

confidence: 99%

Simulation of Perovskite Solar Cells Optimized by the Inverse Planar Method in SILVACO: 3D Electrical and Optical Models

Fakhri

Naderi²,

Farkoush

et al. 2021

Energies

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“…102 Hanmandlu et al incorporated CdSe/ZnS QDs into the MAPbI 3 perovskite to passivate the surface charge traps and grain boundaries. 104 Based on this passivation strategy, the target devices exhibited PCE close to 20% with suppressed hysteresis in the J-V characteristics and fill factor of 81.44%. Moreover, they achieved long-term stability under an N 2 atmosphere at 50 , retaining 80 and 75% of their initial PCE after 720 h and after ℃ 2400 h, respectively; in contrast, the control device lost 70% after 360 h.…”

Section: Pbs Qds Hybrid With All-inorganic Perovskite Filmsmentioning

confidence: 96%

Colloidal quantum dots and metal halide perovskite hybridization for solar cell stability and performance enhancement

Yan

Liu

et al. 2021

J. Mater. Chem. A

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“…Several methods, including modifying the composition [ 68 ] and interface of PPVs with chemicals or NPs, [ 69,70 ] have been proposed for enhancing the efficiencies of PPVs. However, the use of plasmonic NPs to boost the efficiencies of PPVs for indoor applications is rarely mentioned.…”

Section: Indoor Perovskite Photovoltaicsmentioning

confidence: 99%

Recent Advances of Perovskite Solar Cells Embedded with Plasmonic Nanoparticles

Alkhalayfeh

Aziz

Pakhuruddin

et al. 2021

Physica Status Solidi (a)

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In this era of growing energy demand, the recently explored perovskite solar cells (PSCs) have evolved into a potentially viable alternative because of their cost effectiveness and high efficiency. Despite the immense research interest attracted by perovskite solar cells, their commercialization remains constrained by their instability and toxic nature. Among the different advanced solar cells technologies, the application of metallic nanoparticles (MNPs) with plasmonic effects is an alternative, practical approach to improve the stability and enhance the generation and transport of photons and charge carriers. Besides, MNPs improve light absorption and scattering in the active layer, in addition to the expansion of electronic properties by decreasing the binding excitation energy. Herein a synopsis of the importance of PSCs and the utilization of plasmonic NPs to improve their performance is presented. In addition, the existing endeavors to incorporate these plasmonic structures into indoor photovoltaic and semitransparent PSCs are reviewed.

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Suppression of surface defects to achieve hysteresis-free inverted perovskite solar cells via quantum dot passivation

Abstract: We fabricated the defect passivation of perovskite solar cells using CdSe/ZnS quantum dots. The efficient defect passivation of reduces the trap charge density and elongates the charge carrier life time.

Cited by 72 publications

References 52 publications

Simulation of Perovskite Solar Cells Optimized by the Inverse Planar Method in SILVACO: 3D Electrical and Optical Models

Simulation of Perovskite Solar Cells Optimized by the Inverse Planar Method in SILVACO: 3D Electrical and Optical Models

Colloidal quantum dots and metal halide perovskite hybridization for solar cell stability and performance enhancement

Recent Advances of Perovskite Solar Cells Embedded with Plasmonic Nanoparticles

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