Stability of Quantum Dot Solar Cells: A Matter of (Life)Time

Albaladejo‐Siguan, Miguel; Baird, Elizabeth C.; Becker‐Koch, David; Li, Yanxiu; Rogach, Andrey L.; Vaynzof, Yana

doi:10.1002/aenm.202003457

Cited by 81 publications

(65 citation statements)

References 217 publications

(394 reference statements)

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“…[4] By virtue of their excellent optoelectronic properties, QDs have been highlighted in the fields of in vitro diagnostics, solar cells, single photon sources, and light-emitting diodes. [5][6][7][8][9][10][11][12] In particular, tremendous improvements in QDs synthesis methods and device engineering have pushed the performance of QDs light-emitting diodes (QLEDs) close to state-of-the-art organic light-emitting devices (OLEDs). [13][14][15][16] However, despite these merits of QDs, there are still some limitations that need to be overcome, such as the fluctuation of PL intensity of single QD, the photochemical stability of QDs, and the device stability and efficiency rolloff of QLEDs.…”

Section: Introductionmentioning

confidence: 99%

Carrier Dynamics in Alloyed Chalcogenide Quantum Dots and Their Light‐Emitting Devices

Wei

Wang

et al. 2021

Advanced Energy Materials

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mechanism of alloyed QDs is needed. In addition, it is necessary to design synthetic processes that achieve large-scale production in order to widely commercialize. Figure 2. Schematic illustration of the carrier dynamics in a single QD. ①: Excitation upon absorption of a high-energy photon. ②: Hot carrier relaxation to form exciton. ③: Radiative decay to emit a photon. ④: Nonradiative decay. ⑤: Electron (hole) trapping by the electron traps (hole traps). ⑥:Back transfer to regenerate exciton. Reproduced with permission. [105]

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Section: Introductionmentioning

confidence: 99%

Carrier Dynamics in Alloyed Chalcogenide Quantum Dots and Their Light‐Emitting Devices

Wei

Wang

et al. 2021

Advanced Energy Materials

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“…The excess-oxygen-related deep-level emissions were quenched completely, while the near band-edge emissions were greatly enhanced when H atoms were incorporated into ZnO NWs. These H atoms are most likely to exist in the form of shallow donors and may be removed after annealing at 400

[ 108 , 109 , 110 ]. Concerning the desorption of hydroxyl groups, Shi et al [ 108 ] confirmed that annealing at 150

results in the removal of OH groups, but it may also introduce other hydrogen-related impurities.…”

Section: Optimization Strategies Of Ibhj Qdscs Based On Zno Nwsmentioning

confidence: 99%

A Review on the Effects of ZnO Nanowire Morphology on the Performance of Interpenetrating Bulk Heterojunction Quantum Dot Solar Cells

Xing

Wang

2021

Nanomaterials

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Interpenetrating bulk heterojunction (IBHJ) quantum dot solar cells (QDSCs) offer a direct pathway for electrical contacts to overcome the trade-off between light absorption and carrier extraction. However, their complex three-dimensional structure creates higher requirements for the optimization of their design due to their more difficult interface defect states control, more complex light capture mechanism, and more advanced QD deposition technology. ZnO nanowire (NW) has been widely used as the electron transport layer (ETL) for this structure. Hence, the optimization of the ZnO NW morphology (such as density, length, and surface defects) is the key to improving the photoelectric performance of these SCs. In this study, the morphology control principles of ZnO NW for different synthetic methods are discussed. Furthermore, the effects of the density and length of the NW on the collection of photocarriers and their light capture effects are investigated. It is indicated that the NW spacing determines the transverse collection of electrons, while the length of the NW and the thickness of the SC often affect the longitudinal collection of holes. Finally, the optimization strategies for the geometrical morphology of and defect passivation in ZnO NWs are proposed to improve the efficiency of IBHJ QDSCs.

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“…The need to develop complementary materials beyond Pb-QDs has also led to the development of luminescent solar concentrators (LSCs) featuring copper-doped InP/ZnSe QDs (Eren et al, 2021) and CdSe QDs (Albaladejo-Siguan et al, 2021). Similar to the DSSCs, the LSCs are cost-effective and simple solar energy harvesting devices.…”

Section: Pb-free Halide Perovskite Andmentioning

confidence: 99%

“…The observations made by Ravishankar et al (2020) were corroborated by Eren et al (2021), who synthesized copper-doped InP/ZnSe quantum dots for luminescent solar concentrators with an extremely lower power conversion efficiency of 3.4% and external quantum efficiency levels (EQE) of 5.9% (Eren et al, 2021). The PCEs of the materials was significantly low relative to Semitransparent (ST) organic solar cells with a PCE of 17%, Cu 2 O films (PCE-10%) (Ifeanyi et al, 2021), semitransparent polymer solar cells (PCE-7.7%) (Shi et al, 2019), Pb-halide perovskite (PCE-25.5%) (Albaladejo-Siguan et al, 2021). The low PCE offsets the unique benefits associated with the LSCs.…”

Section: Organic Pvmentioning

confidence: 99%

“…Even though there is broad consensus in the scholarly literature on the poor energy and power capacity of LSCs (Albaladejo-Siguan et al, 2021;Eren et al, 2021), there are varied opinions on the potential areas of commercial application of the LSCs. Mazzaro and Vomiero (2018) note that LSC nanomaterials with tunable optical properties were ideal for use in BIPV devices.…”

Section: Organic Pvmentioning

confidence: 99%

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Smart and Solar Greenhouse Covers: Recent Developments and Future Perspectives

et al. 2021

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The examination of recent developments and future perspectives on smart and solar greenhouse covers is significant for commercial agriculture given that traditional greenhouse relied on external energy sources and fossil fuels to facilitate lighting, heating and forced cooling. The aim of this review article was to examine smart and solar materials covering greenhouse. However, the scope was limited to intelligent PhotoVoltaic (PV) systems, optimization of some material properties including smart covers, heat loading and the use of Internet of Things (IoT) to reduce the cost of operating greenhouse. As such, the following thematic areas were expounded in the research; intelligent PV systems, optimization of the Power Conversion Efficiency (PCE), Panel Generator Factor (PGF) and other material properties, heat loading future outlook and perspectives. The intelligent PV section focused on next-generation IoT and Artificial Neural Networks (ANN) systems for greenhouse automation while the optimization of material parameters emphasized quantum dots, semi-transparent organic solar cells, Pb-based and Pb-based PVs and three dimensional (3D) printing. The evaluation translated to better understanding of the future outlook of the energy-independent greenhouse. Greenhouse fitted with transparent PV roofs are a sustainable alternative given that the energy generated was 100% renewable and economical. Conservative estimates further indicated that the replacement of conventional sources of energy with solar would translate to 40–60% energy cost savings. The economic savings were demonstrated by the Levelized cost of energy. A key constraint regarded the limited commercialization of emerging innovations, including transparent and semitransparent PV modules made of Pb-quantum dots, and amorphous tungsten oxide (WO3) films, with desirable electrochromic properties such as reversible color changes. In addition to intelligent energy harvesting, smart IoT-based materials embedded with thermal, humidity, and water sensors improved thermal regulation, frost mitigation and prevention, and the management of pests and disease. In turn, this translated to lower post-harvest losses and better yields and revenues.

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Stability of Quantum Dot Solar Cells: A Matter of (Life)Time

Abstract: stable QDSCs in the past years, and these will be discussed in the following sections both from materials science and device engineering perspectives. Several principal QD materials will be covered separately: lead chalcogenide QDs, lead halide perovskite QDs, and lead-free QDs.

Cited by 81 publications

References 217 publications

Carrier Dynamics in Alloyed Chalcogenide Quantum Dots and Their Light‐Emitting Devices

Carrier Dynamics in Alloyed Chalcogenide Quantum Dots and Their Light‐Emitting Devices

A Review on the Effects of ZnO Nanowire Morphology on the Performance of Interpenetrating Bulk Heterojunction Quantum Dot Solar Cells

Smart and Solar Greenhouse Covers: Recent Developments and Future Perspectives

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