Enhanced mobility CsPbI
            <sub>3</sub>
            quantum dot arrays for record-efficiency, high-voltage photovoltaic cells

Sanehira, Erin M.; Marshall, Ashley R.; Christians, Jeffrey A.; Harvey, Steven P.; Ciesielski, Peter N.; Wheeler, Lance M.; Schulz, Philip; Lin, Lih Y.; Beard, Matthew C.; Luther, Joseph M.

doi:10.1126/sciadv.aao4204

Cited by 879 publications

(738 citation statements)

References 31 publications

Supporting

Mentioning

717

Contrasting

Unclassified

Order By: Relevance

“…To obtain high V oc , a high charge mobility is important as well as the suitable energy level alignment. The mobility for the CsPbI 3 QD film has been reported to be 0.23 cm 2 / V/s,which is over 100 times higher than that of Spiro-OMeTAD (1.80×10 −3 cm 2 /V/s) 29 . Hence, the CTE of PSC device could be significantly enhanced by the CsPbI 3 QDs deposition thus leading to the high V oc .…”

Section: Resultsmentioning

confidence: 92%

Efficiency and stability enhancement of perovskite solar cells by introducing CsPbI3 quantum dots as an interface engineering layer

et al. 2018

View full text Add to dashboard Cite

Although great efforts have been devoted to enhancing the efficiency and stability of perovskite solar cells (PSCs), the performance of PSCs has been far lower than anticipated. Interface engineering is helpful for obtaining high efficiency and stability through control of the interfacial charge transfer in PSCs. This paper demonstrates that the efficiency and stability of PSCs can be enhanced by introducing stable α-CsPbI 3 quantum dots (QDs) as an interface layer between the perovskite film and the hole transport material (HTM) layer. By synergistically controlling the valence band position (VBP) of the perovskite and the interface layer, an interface engineering strategy was successfully used to increase the efficiency of hole transfer from the perovskite to the HTM layer, resulting in the power conversion efficiency increasing from 15.17 to 18.56%. In addition, the enhancement of the stability of PSCs can be attributed to coating inorganic CsPbI 3 QDs onto the perovskite layer, which have a high moisture stability and result in long-term stability of the PSCs in ambient air.

show abstract

Section: Resultsmentioning

confidence: 92%

Efficiency and stability enhancement of perovskite solar cells by introducing CsPbI3 quantum dots as an interface engineering layer

et al. 2018

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6] QDs offer bandgap tunability into the infrared as well as room-temperature film deposition compatible with low-cost, flexible plastic substrates. The remarkably low voltage loss observed in perovskite QD devices makes them a promising top-cell candidate for tandem solar cells.…”

Section: Introductionmentioning

confidence: 99%

“…The remarkably low voltage loss observed in perovskite QD devices makes them a promising top-cell candidate for tandem solar cells. 3 Record efficiencies for QD solar cells have improved rapidly to 13.4% for visible (E g = 1.75-2.13 eV) CsPbI 3 perovskite nanocrystals 3 and to 12% for near-infrared (E g = 1.3-1.4 eV) PbS nanocrystals. 1,7 For any emerging PV technology to compete in mainstream PV markets, however, the module cost per watt must be significantly lower than crystalline silicon (c-Si) PV, for which module prices have dropped below 0.40 $ per W. 8 Achieving this target will likely require each layer in the device stack to reach negligible costs (o0.05 $ per W), given the high cost of encapsulants and other balance-of-module components.…”

Section: Introductionmentioning

confidence: 99%

“…This method was adapted by Luther and colleagues to achieve record QD solar cell efficiencies using CsPbI 3 QDs. 3,4 QD ink preparation is critical for high-throughput manufacturing of QD solar cells. Existing synthesis methods do not produce material immediately suitable for solar cell fabrication.…”

Section: Introductionmentioning

confidence: 99%

“…23 In contrast, the few perovskite QD solar cells reported to-date still require a layer-by-layer ligand treatment using a lead nitrate (Pb(NO 3 ) 2 ) solution in methyl acetate (MeOAc). 3,4 In this work, we analyze the cost of leading PbS and CsPbI 3 perovskite QD synthesis and ink preparation methods, guided by direct commercial experience with high-volume QD production. Our Monte Carlo modeling approach allows us to account for the uncertainty in input parameters and robustly determine the QD contribution to future PV module costs, which we compare to the cost of polycrystalline perovskite PV modules.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis cost dictates the commercial viability of lead sulfide and perovskite quantum dot photovoltaics

Jean

Xiao

Nick

et al. 2018

Energy Environ. Sci.

123

113

View full text Add to dashboard Cite

Any new solar photovoltaic (PV) technology must reach low production costs to compete with today's marketleading crystalline silicon and commercial thin-film PV technologies. Colloidal quantum dots (QDs) could open up new applications by enabling lightweight and flexible PV modules. However, the cost of synthesizing nanocrystals at the large scale needed for PV module production has not previously been investigated. Based on our experience with commercial QD scale-up, we develop a Monte Carlo model to analyze the cost of synthesizing lead sulfide and metal halide perovskite QDs using 8 different reported synthetic methods. We also analyze the cost of solution-phase ligand exchange for preparing deposition-ready PbS QD inks, as well as the manufacturing cost for roll-to-roll solution-processed PV modules using these materials. We find that present QD synthesis costs are prohibitively high for PV applications, with median costs of 11 to 59 $ per g for PbS QDs (0.15 to 0.84 $ per W for a 20% efficient cell) and 73 $ per g for CsPbI 3 QDs (0.74 $ per W). QD ink preparation adds 6.3 $ per g (0.09 $ per W). In total, QD materials contribute up to 55% of the total module cost, making even roll-to-roll-processed QDPV modules significantly more expensive than silicon PV modules. These results suggest that the development of new low-cost synthetic methods is critically important for the commercial relevance of QD photovoltaics. Using our cost model, we identify strategies for reducing synthetic cost and propose a cost target of 5 $ per g to move QD solar cells closer to commercial viability. Broader contextColloidal quantum dots (QDs) have been widely investigated as an avenue toward ultra-low-cost solar photovoltaics (PV), alongside organics and metal halide perovskites. It is often implicitly assumed-and explicitly stated-that QD-based PV technologies can reach low cost because they employ low-cost, abundant elements and low-temperature, high-throughput manufacturing processes. However, this argument holds true only if QDs can be synthesized at low cost-materials dictate the module cost floor. Here we report the first detailed analysis of the cost of large-scale QD synthesis for PV applications. Our Monte Carlo approach constitutes a complete cost modeling framework for QD photovoltaics, from raw precursors to finished modules. We find that QD synthesis is prohibitively expensive today, highlighting the importance of synthetic cost for the commercial viability of QD solar technologies and guiding further research toward promising synthetic directions.

show abstract

Low‐Dimensional Semiconductor Material‐Based Optoelectronic Devices and Their Applications

Retamal

2022

Digital Encyclopedia of Applied Physics

View full text Add to dashboard Cite

Over the past three decades, bottom‐up low‐dimensional semiconductor materials became a high class of materials owing to their superior electronic and optical properties than their bulk counterparts. Accordingly, semiconducting nanostructures have gained a great deal of attention as building blocks for multifunctional optoelectronic devices that control all aspects of light, ranging from absorption, propagation, emission to modulation. Therefore, the article gives a comprehensive review of the intriguing properties of distinct nanostructured semiconducting materials ranging from silicon, III–V compounds, metal oxides, halide perovskites, carbon nanotubes to two‐dimensional (2D) transitional metal dichalcogenides. More specifically, we explore the size dependence, quantum‐confinement effects, structural phase, material composition, surface effects, high surface‐to‐volume ratio, radial or axial structures, 2D in‐plane and out‐of‐plane structures, junction type, energy band alignment, and graded refractive index profile, among others. Accordingly, we next look on how to exploit such properties to build high‐performance optoelectronic devices such as solar cells, photodetectors, waveguides, LEDs, and lasers. Special emphasis is given to nanowire‐based plasmonic lasers for their ability to deliver subwavelength coherent light at the nanoscale. Finally, we survey a large number of applications to display the great potential of semiconducting nanostructures toward the next generation of photonic‐integrated circuits and quantum devices.

show abstract

Enhanced mobility CsPbI ₃ quantum dot arrays for record-efficiency, high-voltage photovoltaic cells

Abstract: Perovskite quantum dot coupling tuned by A-site cation halide treatment yields a record quantum dot solar cell efficiency.

Cited by 879 publications

References 31 publications

Efficiency and stability enhancement of perovskite solar cells by introducing CsPbI3 quantum dots as an interface engineering layer

Efficiency and stability enhancement of perovskite solar cells by introducing CsPbI3 quantum dots as an interface engineering layer

Synthesis cost dictates the commercial viability of lead sulfide and perovskite quantum dot photovoltaics

Low‐Dimensional Semiconductor Material‐Based Optoelectronic Devices and Their Applications

Contact Info

Product

Resources

About

Enhanced mobility CsPbI 3 quantum dot arrays for record-efficiency, high-voltage photovoltaic cells

Abstract: Perovskite quantum dot coupling tuned by A-site cation halide treatment yields a record quantum dot solar cell efficiency.

Cited by 879 publications

References 31 publications

Efficiency and stability enhancement of perovskite solar cells by introducing CsPbI3 quantum dots as an interface engineering layer

Efficiency and stability enhancement of perovskite solar cells by introducing CsPbI3 quantum dots as an interface engineering layer

Synthesis cost dictates the commercial viability of lead sulfide and perovskite quantum dot photovoltaics

Low‐Dimensional Semiconductor Material‐Based Optoelectronic Devices and Their Applications

Contact Info

Product

Resources

About

Enhanced mobility CsPbI ₃ quantum dot arrays for record-efficiency, high-voltage photovoltaic cells