Near‐Infrared Photoactive Semiconductor Quantum Dots for Solar Cells

Zhou, Ru; Xu, Jun; Luo, Peng; Hu, Linhua; Pan, Xu; Xu, Jinzhang; Jiang, Yang; Wang, Luyao

doi:10.1002/aenm.202101923

Cited by 28 publications

(19 citation statements)

References 270 publications

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“…[48] While the distribution of photon flux is about 5%, 43%, and 52% for each of UV, visible, and NIR, respectively. [49] It is noteworthy that the light source specifications in terms of intensity and/or spectral range can be different in some specific applications like indoor PV concentrated PV and space PV. Therefore, apart from the aim of superior PCE, the precise management of solar spectrum from near-ultraviolet to visible to mid-infrared offers diverse opportunities in terms of visual transparency, color appearance, and heat management (Figure 1a).…”

Section: Pcementioning

confidence: 99%

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Meddeb

Götz‐Köhler

Neugebohrn

et al. 2022

Advanced Energy Materials

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solar, wind, hydro, geothermal, and biomass, to enable a steady mitigation of greenhouse gas emissions, which are causing the planetary climate change and global warming. [5][6][7] Additionally, due to the economic development and the worldwide urbanization, a continuous rise of the global energy consumption across all key sectors, that is, power, heating, industry, and transport is occurring. This is expressed by an increase in the annual global electricity demand by 4.5% in 2021 corresponding to additional 1000 TWh. [4] Hence, strict criteria for the selection of competitive and abundant energy alternatives are imposed, requiring high yield at affordable prices. [8] The share of total renewables power generation excluding hydropower exceeded 3000 TWh in 2020, corresponding to almost 12% of the global electricity generation. [3] Considering an effective synergy between various sustainable energy candidates, solar photovoltaics (PV) have demonstrated great capabilities that can satisfy the requirements in the pathway towards 100% renewable electricity. [9][10][11][12] Owing to the research and development activities over the last decades, the power conversion efficiencies of solar cells (SC) have skyrocketed with a prolonged operation lifetime (>15 years) and a drastic plummeting in manufacturing costs (global average module selling price below $0.25 per W). [6,[13][14][15] The rapid universal deployment of PV resulted in a contribution of about 3.4% in the worldwide electricity generation in 2020. [3] Presently, the global installed PV capacity is approaching 1 TW and it is envisioned to reach ≈10 TW by 2030 and 30 to 70 TW by 2050. [16] Interestingly, along with massive electricity production using conventional solar power plants and rooftop solar panels, ancillary concepts of PV offer new strategies for supplying modern systems in versatile applications. [17][18][19] Moreover, diverse functionalities beyond solar energy harvesting can be afforded by adaptive PV, including aesthetic appearance, visual comfort and thermal management. [17,18,20,21] The distributed nature and the ubiquitous accessibility of multifunctional PV products are substantial features of solar PV in contrast to other renewable energies. However, traditional SCs dominating the market impose intrinsic optoelectronic and thermomechanical limitations, that prohibit their multifunctional utilization. To overcome these drawbacks, novel functional materials and innovative device architecture Solar photovoltaics (PV) offer viable and sustainable solutions to satisfy the growing energy demand and to meet the pressing climate targets. The deployment of conventional PV technologies is one of the major contributors of the ongoing energy transition in electricity power sector. However, the diversity of PV paradigms can open different opportunities for supplying modern systems in a wide range of terrestrial, marine, and aerospace applications. Such ubiquitous and versatile applications necessitate the development of PV technologies with customized desig...

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Section: Pcementioning

confidence: 99%

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Meddeb

Götz‐Köhler

Neugebohrn

et al. 2022

Advanced Energy Materials

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“…The environmentally friendly photovoltaic technology affords an effective approach to reach the carbon neutralization goal. As a mainstream photovoltaic technology second only to silicon-based photovoltaics, thin-film solar cells afford the advantages of high absorption coefficients, lightweight, superior compatibility with flexible substrates, and excellent device performance under weak light and high temperatures. − Currently, both copper indium gallium selenide (CIGS) and cadmium telluride (CdTe) solar cells deliver remarkable performance with power conversion efficiencies (PCEs) >22% and excellent long-term operational stability in the laboratory and dominate the commercial market of thin-film solar cells, building-integrated photovoltaics, wearable electronic devices, solar backpack, etc. ,, However, CIGS contains the rare elements of In and Ga, while the toxic Cd compound in CdTe causes environmental pollution . Hence, it is imperative to explore novel light harvesters with earth-abundant and environmentally friendly compounds for thin-film solar cells.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin SnO₂ Buffer Layer Aids in Interface and Band Engineering for Sb₂(S,Se)₃ Solar Cells with over 8% Efficiency

Mao

Bian

Wang

et al. 2022

ACS Appl. Energy Mater.

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The environmentally friendly antimony selenosulfide (Sb2(S,Se)3) semiconductor emerges as a promising light harvester for thin-film photovoltaics owing to its excellent material and optoelectronic properties. The alloyed Sb2(S,Se)3 is endowed with the complementary benefits of Sb2S3 and Sb2Se3, such as a tunable band gap within the range of 1.10–1.70 eV. In Sb2(S,Se)3 solar cells, the n-type semiconductor CdS is extensively used as an electron transport layer (ETL), which plays a role in extracting photogenerated electrons from absorbers and transporting them to conducting substrates. However, the unsatisfactory ETL/absorber interface contact often involves severe interface recombination. Herein, we report that an ultrathin SnO2 buffer layer of ∼10 nm applied on the high-roughness fluorine-doped tin oxide (FTO) substrate aids in effective interface and band engineering for superstrate CdS/Sb2(S,Se)3 solar cells. Careful characterizations confirm that the ultrathin SnO2 buffer layer plays a positive role in inhibiting the shunt current leakage at the ETL/absorber interface and manipulating the cascade energy band structure for more effective interface passivation and efficient electron extraction. Consequently, the resultant SnO2/CdS ETL-based Sb2(S,Se)3 solar cells exhibited a remarkable device efficiency of 8.67%, coupled with a considerable open-circuit voltage of 0.72 V. Our finding demonstrates a facile approach to engineer the interface contact and band offset to accelerate electron extraction, transport, and collection efficiencies.

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“…Organic–inorganic metal halide perovskite solar cells (PSCs) have shown great potential to become a revolutionary photovoltaic technology, owing to their advantages of being cost-effective, ease of fabrication, and considerable power conversion efficiency (PCE) during the past decade. , Thanks to the excellent photoelectric properties of perovskite materials, such as tunable energy bands via composition engineering, long diffusion length (>1 μm), high absorption coefficient (∼10 5 cm –1 at visible range), and high defect tolerance, − laboratory-scale PSCs have made tremendous achievements, reaching a certified PCE as high as 25.5% . Such a rapid development is unprecedented for any other photovoltaic materials.…”

Section: Introductionmentioning

confidence: 99%

SnO₂ Quantum Dot-Modified Mesoporous TiO₂ Electron Transport Layer for Efficient and Stable Perovskite Solar Cells

Zhou

Lyu

Zhu

et al. 2022

ACS Appl. Energy Mater.

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As a revolutionary photovoltaic technology, the perovskite solar cell has received enormous attention, owing to excellent electronic and optical properties of perovskite materials. The mesoporous TiO2 (m-TiO2) framework is extensively used as an electron transport layer (ETL) to construct high-performance perovskite solar cells (PSCs), showing efficient electron extraction capability, owing to the enlarged perovskite/ETL interface. However, the TiO2 ETL usually involves high-density oxygen vacancies, low electron mobility, and relatively high photocatalytic activity toward perovskite materials. To address such issues, herein, we demonstrate the successful construction of SnO2 quantum dot (QD)-modified m-TiO2 as an effective ETL for PSCs. It is revealed that the SnO2 QD-modified m-TiO2 ETL affords more favorable electron extraction and transport characteristics and suppressed charge recombination, resulting from the interfacial passivation and the enhanced conductivity of ETLs. Furthermore, the ultrathin SnO2 QD layer incorporated at the m-TiO2/perovskite interface effectively lowers the photocatalytic activity of TiO2 toward perovskite materials, thereby improving the long-term device stability. Eventually, the MAPbI3- and FAPbI3-based PSCs utilizing the SnO2 QD-modified m-TiO2 ETLs obtained appreciable power conversion efficiencies of 19.09 and 20.09%, respectively, higher than those of counterpart devices based on the conventional m-TiO2 and SnO2 ETLs.

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Near‐Infrared Photoactive Semiconductor Quantum Dots for Solar Cells

Abstract: Figure 15. Schematic diagram of fabricating perovskite CQD thin films modified by conjugated small molecule ITIC. Reproduced with permission. [33]

Cited by 28 publications

References 270 publications

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Ultrathin SnO₂ Buffer Layer Aids in Interface and Band Engineering for Sb₂(S,Se)₃ Solar Cells with over 8% Efficiency

SnO₂ Quantum Dot-Modified Mesoporous TiO₂ Electron Transport Layer for Efficient and Stable Perovskite Solar Cells

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Near‐Infrared Photoactive Semiconductor Quantum Dots for Solar Cells

Abstract: Figure 15. Schematic diagram of fabricating perovskite CQD thin films modified by conjugated small molecule ITIC. Reproduced with permission. [33]

Cited by 28 publications

References 270 publications

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Tunable Photovoltaics: Adapting Solar Cell Technologies to Versatile Applications

Ultrathin SnO2 Buffer Layer Aids in Interface and Band Engineering for Sb2(S,Se)3 Solar Cells with over 8% Efficiency

SnO2 Quantum Dot-Modified Mesoporous TiO2 Electron Transport Layer for Efficient and Stable Perovskite Solar Cells

Contact Info

Product

Resources

About

Ultrathin SnO₂ Buffer Layer Aids in Interface and Band Engineering for Sb₂(S,Se)₃ Solar Cells with over 8% Efficiency

SnO₂ Quantum Dot-Modified Mesoporous TiO₂ Electron Transport Layer for Efficient and Stable Perovskite Solar Cells