Hybrid organic-inorganic perovskite solar cells (PSCs) have attracted significant interest owing to their high power conversion efficiency (PCE) and low cost. Moreover, PSCs demonstrate high performance under low light illumination without significant reduction in
Customer ServiceIn this paper, the factors affecting FF of PSCs under weak light condition are discussed. The results show that the shunt resistance (R sh) can affect the FF, and the PSC with higher R sh exhibit better performances under weak light.
Customer ServiceDevelopment of suitable hole transport materials is vital for perovskite solar cells (PSCs) to diminish the energy barrier and minimize the potential loss. Here, a low-cost hole transport molecule named SFX-POCCF3 (23.72 $/g) is designed with a spiro[fluorene-9,9''-xanthene] (SFX) core and terminated by trifluoroethoxy units. Benefiting from the suitable
Customer ServiceThe volt-ampere characteristics of Si, CIGS, and perovskite solar cells are tested and analyzed by discussing the volt-ampere characteristics testing equipment of solar cells, and the key technical parameters such as open-circuit voltage, short-circuit current, maximum operating power, photoelectric conversion efficiency are obtained under weak
Customer ServiceIn this paper, the factors affecting FF of PSCs under weak light condition are discussed. The results show that the shunt resistance (R sh) can affect the FF, and the PSC
Customer ServiceDetailed guidance on how to make perovskite solar cells with an efficiency of over 20% was proposed by Saliba et al. The work provides a comprehensive, reproducible description of the device fabrication protocols. However, progress in the field requires modifications in the device architectures and used materials. These deviations from the
Customer ServiceWe demonstrated that the preparation of metal electrodes by high-vacuum thermal evaporation, an unavoidable step in almost all device fabrication processes, will damage the surface of perovskite films, resulting in component escape, defect density rebound, carrier extraction barrier, and film stability deterioration.
Customer ServiceAlthough perovskite solar cells have gained attention for renewable and sustainable energy resources, their processing involves high-temperature thermal annealing (TA) and intricate post-treatment (PA) procedures to ensure high efficiency. We present a simple method to enable the formation of high-quality perovskite films at room temperature by
Customer ServiceThe optical properties of each component in perovskite solar cells (PSCs) affect their light-harvesting capability and thus the photocurrent generation and ultimate efficiency of the device. As the power conversion efficiency of PSCs approaches an achievable practical limit, light-management strategies have gained significant attention. In this review, comprehensive
Customer ServicePerovskite solar cells exhibit not only high efficiency under full AM1.5 sunlight, but also have great potential for applications in low-light environments, such as indoors, cloudy conditions
Customer ServiceDesign of the high-efficient light trapping structure for perovskite solar cell. Recently, nano-scaled dielectric and metallic structures based light trapping has been exposed to exhibit excellent
Customer ServiceDue to their excellent photo-to-electric power conversion efficiency (PCE) (up to 25.2%) under AM 1.5G (≈100,000 Lux), the perovskite solar cells (PSCs) have received widespread attention in recent years, but the research on their weak light (0–1000 Lux) performances is still rare. So, the effect factors of their weak light performances
Customer ServiceBecause it consists of p-type hole transport layer, perovskite layer, and n-type electron transport layer similar to a p–i–n structure, it works effectively even under low-illuminance conditions, such as indoor lighting. In this work, we focused
Customer ServiceConspectusOrganic–inorganic lead halide perovskite solar cells (PSCs) have attracted significant interest from the photovoltaic (PV) community due to suitable optoelectronic properties, low manufacturing cost, and tremendous PV performance with a certified power conversion efficiency (PCE) of up to 26.5%. However, long-term operational stability should be
Customer ServiceHere, a holistic passivation strategy is developed to reduce traps both on the surface and in the bulk of micrometer-thick perovskite film, leading to a record efficiency of 40.1% under 301.6...
Customer ServiceBui and their co-authors develop a method based on bias-dependent photoluminescence imaging that enables the spatial resolution of key photovoltaic parameters in perovskite solar cells. These parameters include
Customer ServiceWe measured the EQE EL for a complete PSC operating as a light-emitting diode (LED) under forward voltage bias. For estimating the V OC deficit, the EQE EL was measured when the injection current equals the J SC under simulated 1-sun illumination (Figure S28). A large EQE EL indicates a high ratio of injection current resulting in photoemission,
Customer ServiceHybrid organic-inorganic perovskite solar cells (PSCs) have attracted significant interest owing to their high power conversion efficiency (PCE) and low cost.
Customer ServiceDue to their excellent photo-to-electric power conversion efficiency (PCE) (up to 25.2%) under AM 1.5G (≈100,000 Lux), the perovskite solar cells (PSCs) have received widespread attention in recent years, but the research on their weak light (0–1000 Lux)
Customer ServiceWe found that both control and less PbI 2 perovskite films had low energy shoulder peaks at ∼695 nm when the illumination time was 0 min, while the shoulder of less
Customer ServiceOur results unravel that increased perovskite thickness leads to enhanced light absorption, reduced interfacial recombination at open circuit but greater bimolecular recombination losses at short circuit thus is suitable for devices
Customer ServiceBecause it consists of p-type hole transport layer, perovskite layer, and n-type electron transport layer similar to a p–i–n structure, it works effectively even under low-illuminance conditions, such as indoor lighting. In this work, we focused on the characteristics of perovskite solar cells under low-illuminance conditions, and a
Customer ServiceOur results unravel that increased perovskite thickness leads to enhanced light absorption, reduced interfacial recombination at open circuit but greater bimolecular recombination losses at short circuit thus is suitable for devices working under weak illumination, typical of many real-world applications. Reducing perovskite thickness, however
Customer ServiceWe report on an experiment with perovskite and organic solar cells on board of a rocket flight, reaching satellite altitudes for the first time. The electrical characterization during flight demonstrated in situ their functionality
Customer ServiceHere, a holistic passivation strategy is developed to reduce traps both on the surface and in the bulk of micrometer-thick perovskite film, leading to a record efficiency of 40.1% under 301.6...
Customer ServiceWe demonstrated that the preparation of metal electrodes by high-vacuum thermal evaporation, an unavoidable step in almost all device fabrication processes, will damage the surface of perovskite films, resulting in
Customer ServiceWe found that both control and less PbI 2 perovskite films had low energy shoulder peaks at ∼695 nm when the illumination time was 0 min, while the shoulder of less PbI 2 perovskite film remained until 3 min under UV light illumination (Fig. 5 d and e).
Customer ServicePerovskite solar cells (PSCs), as the third generation of solar cells, have attracted wide attention due to the continuous improvement of power conversion efficiency (PCE), low material cost
Customer ServiceDetailed guidance on how to make perovskite solar cells with an efficiency of over 20% was proposed by Saliba et al. The work provides a comprehensive, reproducible description of the device fabrication protocols.
Customer ServicePerovskite solar cells (PSCs), as the third generation of solar cells, have attracted wide attention due to the continuous improvement of power conversion efficiency (PCE), low material cost and simple manufacturing process. 1–6 PSC, which first appeared in 2009 with an efficiency of 3.8%, has achieved a laboratory-scale photoelectric conversion efficiency of 25.2%. 7–10 Perovskite
Customer ServiceOur theoretical and experimental results reveal the factors affecting the weak light performance of PSCs, and offer constructive guidelines as following for the future design and fabrication. Perovskite solar cells with higher shunt resistance exhibit better weak light performances.
The relatively low potential in the less PbI 2 group is attributed to the increased carrier trapping sites from grain boundaries, which may increase the loss of leakage current , . The presence of residual PbI 2 can affect the surface potential of perovskite films.
Although solar cell device is a complex system composed of multiple functional layers (6), optimizing the perovskite film could generally contribute to the enhancement of final performance of PSCs (7 – 10). Previously, the preprepared or optimized perovskite films were assumed to be the same as the films actually working in the device (11 – 13).
In summary, we studied the performances of PSCs at low-intensity light irradiation. The experimental results show that the perovskite solar cells are intrinsically suitable for indoor low-power applications. The unit output power of PSCs can reach up to 98.79 μW/cm 2 at 1000 Lux.
Therefore, we suspect that the photoelectric properties of the perovskite film will be affected inevitably. Conductive AFM (c-AFM) showed that HTEE weakened the conductivity of the perovskite film surface (Fig. 2, A and B), substantially reducing the maximum current from 1400 to 700 pA when a voltage of 0.6 V was applied to the probe (Fig. 2C).
Finally, under the synergistic passivation of residual PbI 2 and PEAI, the excess PbI 2 perovskite solar cell device achieved a VOC of up to 1.266 V with the lowest VOC deficit. The work will provide a guiding instruction on the management of PbI 2 in perovskite precursor to obtain high performance wide bandgap PSCs.
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