DataVXAdvanced Functional MaterialsPaper
journal article·2020-09Open access

Multiphoton Absorption Stimulated Metal Chalcogenide Quantum Dot Solar Cells under Ambient and Concentrated Irradiance

Bo Hou, Byung‐Sung Kim, Harrison Ka Hin Lee, Yuljae Cho, Paul Giraud, Mengxia Liu, Jingchao Zhang, Matthew L. Davies, James R. Durrant, Wing Chung Tsoi, Zhe Li, Stoichko D. Dimitrov, Jung Inn Sohn, SeungNam Cha, Jong Min Kim

Advanced Functional Materials· Volume 30· Issue 39
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Source abstract

Abstract

Abstract Colloidal metal chalcogenide quantum dots (QDs) have excellent quantum efficiency in light–matter interactions and good device stability. However, QDs have been brought to the forefront as viable building blocks in bottom‐up assembling semiconductor devices, the development of QD solar cell (QDSC) is still confronting considerable challenges compared to other QD technologies due to their low performance under natural sunlight, as a consequence of untapped potential from their quantized density‐of‐state and inorganic natures. This report is designed to address this long‐standing challenge by accessing the feasibility of using QDSC for indoor and concentration PV (CPV) applications. This work finds that above bandgap photon energy irradiation of QD solids can generate high densities of excitons via multi‐photon absorption (MPA), and these excitons are not limited to diffuse by Auger recombination up to 1.5 × 1019 cm−3 densities. Based on these findings, a 19.5% (2000 lux indoor light) and an 11.6% efficiency (1.5 Suns) have been facilely realized from ordinary QDSCs (9.55% under 1 Sun). To further illustrate the potential of the MPA in QDSCs, 21.29% efficiency polymer lens CPVs (4.08 Suns) and viable sensor networks powered by indoor QDSCs matrix have been demonstrated.
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Research context

PolymersElectronic materials

OpenAlex topics: Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics and Astronomy Cardiff University Cardiff CF24 3AA UK

Department of Engineering Science University of Oxford Oxford OX1 3PJ UK

SPECIFIC College of Engineering Swansea University Swansea SA1 8EN UK

University of Michigan‐Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University 800 Dong Chuan Road, Minhang District Shanghai 200240 China

Department of Electrical and Computer Engineering University of Toronto 10 King's College Road Toronto Ontario M5S 3G4 Canada

Department of Biostatistics and Bioinformatics Emory University Atlanta GA 30322 USA

Department of Chemistry Imperial College London London SW7 2AZ UK

School of Engineering and Materials Science (SEMS) Queen Mary University of London London E1 4NS UK

School of Biological and Chemical Sciences Queen Mary University of London London E1 4NS UK

Division of Physics and Semiconductor Science Dongguk University Seoul 100‐715 Republic of Korea

Department of Physics Sungkyunkwan University Suwon 16419 Republic of Korea

Department of Engineering University of Cambridge Cambridge CB3 0FA UK

Funding

National Research Foundation of Korea · Engineering and Physical Sciences Research Council · Horizon 2020 Framework Programme

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