Solution-processed perovskite-colloidal quantum dot tandem solar cells for photon collection beyond 1000 nm

Manekkathodi, Afsal; Chen, Bin; Kim, Junghwan; Baek, Se‐Woong; Scheffel, Benjamin; Hou, Yi; Ouellette, Olivier; Saidaminov, Makhsud I.; Voznyy, Oleksandr; Madhavan, Vinod E.; Belaidi, Abdelhak; Ashhab, Sahel; Sargent, Edward H.

doi:10.1039/c9ta11462a

Cited by 50 publications

(51 citation statements)

References 36 publications

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“…Multi-junction solar cells with appropriate E g could improve the utilization of the solar spectrum and suppress energy loss in the single-junction solar cells (heating of high-energy photons and transmission of low-energy photons), which provides a strategy to achieve a PCE over single-junction solar cells. Theoretically, the tandem solar cells fabricated with the photovoltaic materials with E g of 1.75 and 0.9 eV could achieve a PCE of more than 45% ( Manekkathodi et al., 2019 ). For instance, the metal halide perovskites are very promising solution-processed photovoltaic materials and the perovskite solar cells had a high PCE of over 25%.…”

Section: Pbs Cqd Inksmentioning

confidence: 99%

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PbS Colloidal Quantum Dot Inks for Infrared Solar Cells

et al. 2020

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Summary Infrared PbS colloidal quantum dot (CQD)-based materials receive significant attention because of its unique properties. The PbS CQD ink that originates from ligand exchange of CQDs is highly potential for efficient and stable infrared CQD solar cells (CQDSCs) using low-temperature solution-phase processing. In this review, we present a comprehensive overview of CQD inks for the development of efficient infrared solar cells, which can effectively harvest the photons from the infrared wavelength region of the solar spectrum, including the importance of infrared absorbers for solar cells, the unique properties of CQDs, ligand-exchange determined CQD inks, and related photovoltaic performance of CQDSCs. Finally, we present a brief conclusion, and the possible challenges and opportunities of the CQD inks are discussed in-depth to further develop highly efficient and stable infrared solar cells.

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Section: Pbs Cqd Inksmentioning

confidence: 99%

“… (C) EQE spectra measured from the front perovskite cell and back CQDSC. Adapted with permission from Manekkathodi et al (2019) . Copyright (2019) The Royal Society of Chemistry.…”

Section: Pbs Cqd Inksmentioning

confidence: 99%

PbS Colloidal Quantum Dot Inks for Infrared Solar Cells

et al. 2020

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“…As these devices usually employ materials having a bandgap of 1.5-1.7 eV, they are also particularly attractive as top cells in tandem devices. They can be coupled with perovskite 4,5 , organic 6 , colloidal quantum dot (CQD) [7][8][9] , crystalline silicon 10,11 , and copper indium gallium selenide (CIGS) 12,13 solar cells in both two-terminal (2T) and four-terminal (4T) configurations. The 4T tandem arrangement offers a broader bandgap selection window for the constituent cells 1,14 .…”

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Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems

et al. 2020

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Tandem solar cells involving metal-halide perovskite subcells offer routes to power conversion efficiencies (PCEs) that exceed the single-junction limit; however, reported PCE values for tandems have so far lain below their potential due to inefficient photon harvesting. Here we increase the optical path length in perovskite films by preserving smooth morphology while increasing thickness using a method we term boosted solvent extraction. Carrier collection in these filmsas madeis limited by an insufficient electron diffusion length; however, we further find that adding a Lewis base reduces the trap density and enhances the electron-diffusion length to 2.3 µm, enabling a 19% PCE for 1.63 eV semi-transparent perovskite cells having an average near-infrared transmittance of 85%. The perovskite top cell combined with solution-processed colloidal quantum dot:organic hybrid bottom cell leads to a PCE of 24%; while coupling the perovskite cell with a silicon bottom cell yields a PCE of 28.2%.

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“…Compared to other well‐established bottom cells, colloidal quantum dot's (CQD) bandgap can be tuned to a value as low as 0.5 eV. [ 324,325 ] This unique ability of CQD allows them to harness photon energy in the NIR region effectively in comparison to other solar cells. The efficacy of CQDs has already been exploited effectively by adopting them as a bottom cell in perovskite‐based TSCs to demonstrate excellent results ( Table 8 , Table 9 ).…”

Section: Perovskite‐based Tscsmentioning

confidence: 99%

Near‐Infrared‐Transparent Perovskite Solar Cells and Perovskite‐Based Tandem Photovoltaics

et al. 2020

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production have resulted in the reduction of production cost and has facilitated the growth of solar PV technology. [2-6] To make the PV technology more costcompetitive compared to other conventional sources of energy and to further fuel its rapid deployment, the levelized cost of electricity (LCOE) of a PV system needs to be reduced. In a PV system, apart from PV modules, other constituent components such as mounting unit, wiring, inverters, and battery storage constitute about 55% of the total cost. [7,8] These components are generally referred to as the balance of system (BOS). The BOS cost scales proportionally with the area of solar panel installation. An ideal way to reduce the LCOE is by increasing the efficiency of the PV modules. [8] The efficiency of well-established solar cell technologies (Figure 1) such as crystalline silicon (c-Si), gallium arsenide (GaAs) and copper indium gallium selenide (CIGS) are progressing toward the Shockley-Queisser (S-Q) limit, leaving limited room for further improvement in their performance. The thermalization and non-absorption losses incurred in these solar cells mainly restrict their spectral utilization and, consequently, their performance. However, the thermalization losses incurred in single-junction solar cells can be mitigated by combining a wide-bandgap cell with a lowbandgap cell in a multijunction solar cell design, which possesses the ability to achieve efficiencies that surpass the S-Q limit of single-junction solar cells. The practical implementation of multijunction solar cells (MJSCs) utilizing III-V materials have achieved great success in the past. [9] Under 1 sun illumination, LG Electronics and Sharp Corporation have demonstrated monolithic two-terminal MJSC devices using 2-junction (InGaP/GaAs) and 3-junction (InGaP/GaAs/InGaAs) absorber layers to attain power conversion efficiencies (PCEs) of 32.8% [10] and 37.8% [11] respectively. In 2013, Spectrolab utilized a direct bonding technique to grow a lattice-matched 5-junction monolithic MJSC device and demonstrated an efficiency of 38.8% under 1 sun illumination. [12] Very recently, NREL developed a 6-junction monolithic MJSC device to demonstrate a PCE of 39.2% under 1 sun illumination. [13] Despite achieving efficiencies beyond the S-Q limit of singlejunction solar cells, the deployment of III-V MJSCs is limited to space applications due to their high manufacturing cost coupled with slow and complicated fabrication procedures. [14] Metal halide perovskite solar cells (PSCs) have gained tremendous attention due to their high power conversion efficiencies (PCEs) and potential for low-cost manufacturing. Their wide and tunable bandgap makes perovskites an ideal candidate for tandem solar cells (TSCs) with well-established narrow bandgap photovoltaic technologies, such as crystalline silicon and Cu(In,Ga)Se 2 , to boost the PCEs beyond the Shockley-Queisser limit at affordable additional cost. Although perovskite-based TSCs have shown rapid progress over the past few years, they are far from reaching the...

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Solution-processed perovskite-colloidal quantum dot tandem solar cells for photon collection beyond 1000 nm

Abstract: Multi-junction solar cells based on solution-processed metal halide perovskites offer a route to increased power conversion efficiency (PCE); however, the limited options for infrared (IR)-absorbing back cells have constrained progress.

Cited by 50 publications

References 36 publications

PbS Colloidal Quantum Dot Inks for Infrared Solar Cells

PbS Colloidal Quantum Dot Inks for Infrared Solar Cells

Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems

Near‐Infrared‐Transparent Perovskite Solar Cells and Perovskite‐Based Tandem Photovoltaics

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