Hybrid tandem solar cells with depleted-heterojunction quantum dot and polymer bulk heterojunction subcells

Kim, Taesoo; Gao, Yangqin; Hu, Hanlin; Yan, Bicheng; Ning, Zhijun; Jagadamma, Lethy Krishnan; Zhao, Kui; Kirmani, Ahmad R.; Eid, Jessica; Adachi, Michael M.; Sargent, Edward H.; Beaujuge, Pierre M.

doi:10.1016/j.nanoen.2015.08.010

Cited by 41 publications

(46 citation statements)

References 40 publications

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“…However, one of the biggest strengths of QDs is their tunable bandgap, which could be used more to complement other existing technologies. For instance, using QDs in combination with commercial Si or CdTe cells could boost their efficiency in a tandem configuration [95][96][97][98]228,229]. al.…”

Section: Quantum Dot Solar Cellsmentioning

confidence: 99%

Quantum Dot Solar Cells: Small Beginnings Have Large Impacts

2018

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From a niche field over 30 years ago, quantum dots (QDs) have developed into viable materials for many commercial optoelectronic devices. We discuss the advancements in Pb-based QD solar cells (QDSCs) from a viewpoint of the pathways an excited state can take when relaxing back to the ground state. Systematically understanding the fundamental processes occurring in QDs has led to improvements in solar cell efficiency from ~3% to over 13% in 8 years. We compile data from ~200 articles reporting functioning QDSCs to give an overview of the current limitations in the technology. We find that the open circuit voltage limits the device efficiency and propose some strategies for overcoming this limitation.

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Section: Quantum Dot Solar Cellsmentioning

confidence: 99%

Quantum Dot Solar Cells: Small Beginnings Have Large Impacts

2018

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“…Different nanoscale structures like mesoporous inorganic films mixed with organics, alternating inorganic-organic lamellar structures and nanowire structures may be made. Hybride solar cells exist in many variations and combinations and thus constitute a very broad group of solar cells, where e.g., nanoparticle, nanowire, quantum dot, graphene, carbon nanotube, conjugated polymer, silicon, cadmium telluride, cadmium sulfide, perovskite, titanium dioxide and dye sensitized materials among others are being applied [86][87][88][89][90][91][92][93][94][95][96][97][98][99][100].…”

Section: Hybrid Solar Cellsmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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Abstract:Building integrated photovoltaics (BIPV) offer an aesthetical, economical and technical solution to integrate solar cells harvesting solar radiation to produce electricity within the climate envelopes of buildings. Photovoltaic (PV) cells may be mounted above or onto the existing or traditional roofing or wall systems. However, BIPV systems replace the outer building envelope skin, i.e., the climate screen, hence serving simultanously as both a climate screen and a power source generating electricity. Thus, BIPV may provide savings in materials and labor, in addition to reducing the electricity costs. Hence, for the BIPV products, in addition to specific requirements put on the solar cell technology, it is of major importance to have satisfactory or strict requirements of rain tightness and durability, where building physical issues like e.g., heat and moisture transport in the building envelope also have to be considered and accounted for. This work, from both a technological and scientific point of view, summarizes briefly the current state-of-the-art of BIPV, including both BIPV foil, tiles, modules and solar cell glazing products, and addresses possible research pathways for BIPV in the years to come.

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“…The Author to whom correspondence should be addressed: aram.amassian@ kaust.edu.sa hybrid tandem PCE of 7.9% is one of the highest efficiencies reported to date in hybrid tandem solar cells combining CQD and organic subcells. 19,24,25 It surpasses both the efficiencies of the organic single cell (6.6%) and that of the CQD single cell (4.8%).…”

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confidence: 91%

“…In this letter, we report on a hybrid tandem solar cell that combines a low bandgap bulk heterojunction polymer:fullerene subcell with a PbS CQD subcell. 3,[17][18][19] The combination of a low bandgap polymer donor with [6,6]phenyl-C 60 -butyric acid methyl ester (PC 61 BM), selected as the acceptor because of its weak absorption in the visible, ensures excellent spectral complementarity with the CQD subcell in the visible and near infrared (NIR) regions of the solar spectrum. In turn, the PCE of the hybrid tandem is found to improve significantly from the previously reported value of 5.3% to the value of 7.9%, using a similar device architecture.…”

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confidence: 99%

“…In turn, the PCE of the hybrid tandem is found to improve significantly from the previously reported value of 5.3% to the value of 7.9%, using a similar device architecture. 15,19 The monolithically integrated tandem is electrically connected in series using p-and n-type interconnecting layers (ICLs) that combine a metal oxide and a conjugated polyelectrolyte sandwiching an ultrathin and unpercolated Au layer forming isolated nanoislands. [20][21][22][23] The tandem device achieves a high V OC (1.25 V) equal to the sum of the subcell voltages and a high FF (67%), indicating that the subcells are properly connected via the ICL.…”

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confidence: 99%

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Hybrid tandem quantum dot/organic photovoltaic cells with complementary near infrared absorption

Kim

Palmiano

Liang

et al. 2017

Applied Physics Letters

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Monolithically integrated hybrid tandem solar cells that effectively combine solution-processed colloidal quantum dot (CQD) and organic bulk heterojunction subcells to achieve tandem performance that surpasses the individual subcell efficiencies have not been demonstrated to date. In this work, we demonstrate hybrid tandem cells with a low bandgap PbS CQD subcell harvesting the visible and near-infrared photons and a polymer:fullerene-poly (diketopyrrolopyrrole-terthiophene) (PDPP3T):[6,6]-phenyl-C-butyric acid methyl ester (PCBM)-top cell absorbing effectively the red and near-infrared photons of the solar spectrum in a complementary fashion. The two subcells are connected in series via an interconnecting layer (ICL) composed of a metal oxide layer, a conjugated polyelectrolyte, and an ultrathin layer of Au. The ultrathin layer of Au forms nano-islands in the ICL, reducing the series resistance, increasing the shunt resistance, and enhancing the device fill-factor. The hybrid tandems reach a power conversion efficiency (PCE) of 7.9%, significantly higher than the PCE of the corresponding individual single cells, representing one of the highest efficiencies reported to date for hybrid tandem solar cells based on CQD and polymer subcells.

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Hybrid tandem solar cells with depleted-heterojunction quantum dot and polymer bulk heterojunction subcells

Cited by 41 publications

References 40 publications

Quantum Dot Solar Cells: Small Beginnings Have Large Impacts

Quantum Dot Solar Cells: Small Beginnings Have Large Impacts

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Hybrid tandem quantum dot/organic photovoltaic cells with complementary near infrared absorption

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