Monolayer Perovskite Bridges Enable Strong Quantum Dot Coupling for Efficient Solar Cells

Sun, Bin; Johnston, Andrew; Xu, Chao; Wei, Mingyang; Huang, Ziru; Jiang, Zhang; Zhou, Hua; Gao, Yajun; Dong, Yitong; Ouellette, Olivier; Zheng, Xiaopeng; Liu, Jiakai; Choi, Min; Gao, Yuan; Baek, Se‐Woong; Laquai, Frédéric; Bakr, Osman M.; Ban, Dayan; Voznyy, Oleksandr; Arquer, F. Pelayo Garcı́a de; Sargent, Edward H.

doi:10.1016/j.joule.2020.05.011

Cited by 170 publications

(231 citation statements)

References 45 publications

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“…6a), signicantly higher than the record PCE of QDPVs under 1 sun ($13.8%). 82 The authors further demonstrated the feasibility of QDPVs in powering indoor-light-sensor networks. As shown in Fig.…”

Section: Qdpvs For Indoor Applicationmentioning

confidence: 93%

Indoor application of emerging photovoltaics—progress, challenges and perspectives

et al. 2020

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Section: Qdpvs For Indoor Applicationmentioning

confidence: 93%

Indoor application of emerging photovoltaics—progress, challenges and perspectives

et al. 2020

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“…[1,2] Research efforts in device architecture and surface passivation have enabled power conversion efficiency (PCE) of 13.8%. [3] However, CQD-SCs still suffer from low open-circuit voltage (V OC ) and relatively weak absorption in the near-infrared (NIR) region. [4][5][6][7][8][9] For the organic front cell a well-known medium-bandgap (E g ) polymer donor (PTB7-Th) and an ultranarrow E g nonfullerene acceptor (IEICO-4F) were used (Figure 1b), efficiently absorbing light where the CQD back cell shows low absorption coefficient.…”

Section: Doi: 101002/adma202004657mentioning

confidence: 99%

Monolithic Organic/Colloidal Quantum Dot Hybrid Tandem Solar Cells via Buffer Engineering

et al. 2020

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Monolithically integrated hybrid tandem solar cells (TSCs) that combine solution‐processed colloidal quantum dot (CQD) and organic molecules are a promising device architecture, able to complement the absorption across the visible to the infrared. However, the performance of organic/CQD hybrid TSCs has not yet surpassed that of single‐junction CQD solar cells. Here, a strategic optical structure is devised to overcome the prior performance limit of hybrid TSCs by employing a multibuffer layer and a dual near‐infrared (NIR) absorber. In particular, a multibuffer layer is introduced to solve the problem of the CQD solvent penetrating the underlying organic layer. In addition, the matching current of monolithic TSCs is significantly improved to 15.2 mA cm−2 by using a dual NIR organic absorber that complements the absorption of CQD. The hybrid TSCs reach a power conversion efficiency (PCE) of 13.7%, higher than that of the corresponding individual single‐junction cells, representing the highest efficiency reported to date for CQD‐based hybrid TSCs.

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“…[74] Table 2 shows the representative efficiency of each device structure in PbS QD solar cell. [63,70,[74][75][76]…”

Section: Basic Device Architecture For Carrier Transport In Qd Pvsmentioning

confidence: 99%

Design Strategy of Quantum Dot Thin‐Film Solar Cells

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Lim

Yun

et al. 2020

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Quantum dots (QDs) are emerging photovoltaic materials that display exclusive characteristics that can be adjusted through modification of their size and surface chemistry. However, designing a QD‐based optoelectronic device requires specialized approaches compared with designing conventional bulk‐based solar cells. In this paper, design considerations for QD thin‐film solar cells are introduced from two different viewpoints: optics and electrics. The confined energy level of QDs contributes to the adjustment of their band alignment, enabling their absorption characteristics to be adapted to a specific device purpose. However, the materials selected for this energy adjustment can increase the light loss induced by interface reflection. Thus, management of the light path is important for optical QD solar cell design, whereas surface modification is a crucial issue for the electrical design of QD solar cells. QD thin‐film solar cell architectures are fabricated as a heterojunction today, and ligand exchange provides suitable doping states and enhanced carrier transfer for the junction. Lastly, the stability issues and methods on QD thin‐film solar cells are surveyed. Through these strategies, a QD solar cell study can provide valuable insights for future‐oriented solar cell technology.

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Monolayer Perovskite Bridges Enable Strong Quantum Dot Coupling for Efficient Solar Cells

Cited by 170 publications

References 45 publications

Indoor application of emerging photovoltaics—progress, challenges and perspectives

Indoor application of emerging photovoltaics—progress, challenges and perspectives

Monolithic Organic/Colloidal Quantum Dot Hybrid Tandem Solar Cells via Buffer Engineering

Design Strategy of Quantum Dot Thin‐Film Solar Cells

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