High-efficiency inverted semi-transparent planar perovskite solar cells in substrate configuration

Fu, Fan; Feurer, Thomas; Weiss, Thomas Paul; Pisoni, Stefano; Avancini, Enrico; Andrés, Christian; Buecheler, Stephan; Tiwari, Ayodhya N.

doi:10.1038/nenergy.2016.190

Cited by 263 publications

(277 citation statements)

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“…Targeting tandem applications, a longpass filter of 780 nm (1.59 eV photon energy) was used, corresponding to the bandgap (1.57 eV) of a perovskite top cell in a state‐of‐the‐art thin film tandem solar cell reported . The IV characteristics measured under this filter for the 3 low bandgap cells are presented in Figure B.…”

Section: Performance and Defect Analysismentioning

confidence: 99%

“…CIGS has been used in tandem applications by stacking individual devices with different bandgap absorbers of CIGS‐CdTe, CIGS‐dye sensitized, CIGS‐CGS, CIGS‐CIGS, and recently CIGS‐perovskite with efficiencies exceeding 20% . The record tandem solar cell based on CI(G)S as a bottom cell reported an efficiency of 6.0% for CIGS and 4.8% for CIS under a 16.1% perovskite upper high bandgap cell (bandgap of 1.57 eV). In this contribution, we report on the optimization of CIS and CIGS bottom cells, where we introduce promising high‐performance solar cells that have the potential to be integrated in tandem devices, with efficiencies of 7.4% to 8.3% for the bottom cell measured under a longpass filter corresponding to the bandgap of the reported perovskite solar cell .…”

Section: Introductionmentioning

confidence: 99%

“…The record tandem solar cell based on CI(G)S as a bottom cell reported an efficiency of 6.0% for CIGS and 4.8% for CIS under a 16.1% perovskite upper high bandgap cell (bandgap of 1.57 eV). In this contribution, we report on the optimization of CIS and CIGS bottom cells, where we introduce promising high‐performance solar cells that have the potential to be integrated in tandem devices, with efficiencies of 7.4% to 8.3% for the bottom cell measured under a longpass filter corresponding to the bandgap of the reported perovskite solar cell . One of these cells is a ternary CIS compound that has a lower bandgap compared to CIGS and a less complex structure .…”

Section: Introductionmentioning

confidence: 99%

“…The other 2 cells are quaternary CIGS compounds with low Ga content leading to bandgaps of 1.04 and 1.07 eV, which is considerably lower than state‐of‐the‐art CIGS compounds, with efficiencies as high as 15.7% and 16.6% (both certified) respectively. Using the reported 16.1% perovskite top cell, our reported cells have the potential of achieving efficiencies of 23.5% to 24.4% in tandem configuration. We report on the characterization of the 3 high‐performance low bandgap cells.…”

Section: Introductionmentioning

confidence: 99%

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High‐performance low bandgap thin film solar cells for tandem applications

Elanzeery

Babbe

Melchiorre

et al. 2018

Progress in Photovoltaics

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Thin film tandem solar cells provide a promising approach to achieve high efficiencies. | INTRODUCTIONCurrently, there is an increasing demand to provide cheap high-efficiency solar cells that can exceed state-of-the-art single-junction solar cell technologies. One approach to achieve this is through using tandem solar cells. Tandem or multijunction solar cells have the potential to achieve efficiencies of more than 30%. set the full illumination intensity for the IVT measurements. A mechanical shutter was used to allow dark and illuminated measurements within the same experiment. Admittance measurements were performed in the dark, after keeping the sample mounted in the dark at room temperature for 1 night, with an LCR meter using the same cryostat setup. All characterizations were performed after adding the ARC layer. For the extraction of the quasi-Fermi-level splitting (qFLS), photoluminescence (PL) spectra were recorded on CdS-covered absorbers in a home-built calibrated setup at room temperature under continuous monochromatic illumination with 660-nm wavelength. 27,28The spectral and absolute corrected PL spectra are converted into energy space. In a semilogarithmic plot, the high-energy wing of the PL peak is fitted linearly and is evaluated by means of the simplified Planck's generalized law, 29 providing the qFLS as well as the temperature. Figure 1A. Figure 1 A also presents the electrical behavior under light for CIS_0.95 measured in-house. Table 1 as a function of absorber bandgap are shown in Figure 2. All IV measurements were performed after adding an ARC layer.In Figure 1A, it is observed that V OC increases and J summarized in Table 1, it can be concluded that the cells lose more in recombination than in incomplete absorption (η el < η op ). Moreover, the

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Section: Performance and Defect Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High‐performance low bandgap thin film solar cells for tandem applications

Elanzeery

Babbe

Melchiorre

et al. 2018

Progress in Photovoltaics

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“…[7,8] So far, perovskites have successfully been employed in tandem cells with bottom cells based on c-Si, chalcogenides, and narrow-bandgap perovskites. [9][10][11][12][13] Silicon heterojunction (SHJ) bottom cells enabled the highest efficiencies reported for perovskite-based tandems due to their high open-circuit voltage, [14] excellent near-infrared response [15] and power conversion efficiencies above 26%. [16] Among the different possible tandem configurations, including 4-terminal mechanically stacked cells [17,18] and devices using a spectral splitter, [19] the monolithically integrated 2-terminal tandem configuration, in which the top cell is directly deposited onto the bottom cell, arguably has the highest potential to reach a low levelized cost of electricity.…”

Section: Introductionmentioning

confidence: 99%

Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction

Sahli

Kamino

Werner

et al. 2017

Advanced Energy Materials

202

264

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Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next‐generation photovoltaics with performance beyond the single‐junction limit at potentially low production costs. Current designs for monolithic tandems rely on transparent conductive oxides as an intermediate recombination layer, which lead to optical losses and reduced shunt resistance. An improved recombination junction based on nanocrystalline silicon layers to mitigate these losses is demonstrated. When employed in monolithic perovskite/silicon heterojunction tandem cells with a planar front side, this junction is found to increase the bottom cell photocurrent by more than 1 mA cm−2. In combination with a cesium‐based perovskite top cell, this leads to tandem cell power‐conversion efficiencies of up to 22.7% obtained from J–V measurements and steady‐state efficiencies of up to 22.0% during maximum power point tracking. Thanks to its low lateral conductivity, the nanocrystalline silicon recombination junction enables upscaling of monolithic perovskite/silicon heterojunction tandem cells, resulting in a 12.96 cm2 monolithic tandem cell with a steady‐state efficiency of 18%.

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