Wide-Bandgap Halide Perovskites for Indoor Photovoltaics

Jagadamma, Lethy Krishnan; Wang, Shaoyang

doi:10.3389/fchem.2021.632021

Cited by 36 publications

(32 citation statements)

References 53 publications

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“…Thus, PSM also shows good potential under low illuminance (<<1 sun), suitable for diffuse light conditions. [21,31] The J-V curve at different intensities is shown in Figure S16 in the Supporting Information. Moreover, the benefit of planar architecture in our ST PSM is a relatively decent V oc value at lower illumination (more than 90% compared to AM 1.5).…”

Section: Figure 5amentioning

confidence: 99%

Multimodal Approach towards Large Area Fully Semitransparent Perovskite Solar Module

Rai

Yuan

Sadhu

et al. 2021

Advanced Energy Materials

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area >10 cm 2 . They mostly focus on efficient approaches for qualitative coating/ printing of perovskite over large areas like blade coating, pneumatic squeezing, slot die, CVD, co-evaporation, spin coating, etc. [2] The certified mini-module results recorded in the NREL chart encourages the PV community to further enhance their efficiency and stability with vast options of large area processability. [1b] As of today, most of the reported high-efficiency PSM employs thick and opaque perovskite with Au top contact.However, to extend PSM's application for BIPV especially for power generating windows, one needs to have visibly semitransparent (ST) devices. This demands a collective average visible transparency (AVT) of >20% for the full device stack. [3] Some reports to fabricate ST PSC focus mainly on different strategies of ST perovskite film such as ultra-thin film deposition, micro structuring including printing, dewetting, selfassembly, etc. Amongst these, ultrathin films (≈250 nm) show comparatively higher efficiencies and controlled procedures. [4] Their final PCE (Power Conversion Efficiency) is reported with Au/Ag metal (opaque) contact which does not give a clear picture of full ST PSC performance. Other reports of ST PSC focus only on replacing the top metal contact Au/Ag with transparent conductors such as ITO, MoO x , Ag nanowires, graphene, DMD (dielectric-metal-dielectric) stack wherein the perovskite is not semitransparent (AVT < 20%). [5] Often the term "semitransparent" in the title of these articles is misleading as different authors refer to different optical regions (visible or IR) of interest and sometimes the transparency is calculated without the top electrode. This raises a concern because the interaction/adhesion behavior of ST perovskite with the transparent top contacts is different as compared to their opaque counterparts, and one cannot simply infer that similar efficiency will be achieved when replacing the metal electrode with a transparent conductor. While highlighting this ambiguity and the lack of sufficient work in the semitransparent large area PSM, in this work, we address three major problems encountered in ST solar cells by 1) improving the quality of ultrathin perovskite, 2) designing a high-quality transparent contact, and 3) compensating the reduced photon absorption by additional photon harvesting material.Starting with the first problem, ultra-thin perovskite underperforms as compared to the standard thickness not only Significant advancements in the perovskite solar cells/modules (PSCs/PSMs) toward better operational stability and large area scalability have recently been reported. However, semitransparent (ST), high efficiency, and large area PSMs are still not well explored and require attention to realize their application in building-integrated photovoltaics (BIPV). This work employs multiple synergistic strategies to improve the quality and stability of the ST perovskite film while ensuring high transparency. Europium ions, doped in the perovskite, are found to...

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Section: Figure 5amentioning

confidence: 99%

Multimodal Approach towards Large Area Fully Semitransparent Perovskite Solar Module

Rai

Yuan

Sadhu

et al. 2021

Advanced Energy Materials

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“…In comparison with PCEs for IOPVs, which are typically less than 23%, a substantial proportion of PCEs for perovskite IPVs exceeds 30%. [24,[93][94][95][96][97][98][99]…”

Section: Opv Devices With Embedded Metallic Nanoparticlesmentioning

confidence: 99%

“…Therefore, the optimum bandgap for IOPVs is between 1.8 and 2.0 eV. [11,23,24] In contrast, under AM1.5G condition, wide-bandgap materials are not suited for achieving high PCEs. [25,26] To optimize the generation of indoor power, diverse approaches have to be considered during the design of indoor light harvesting resources and device configurations that differ from the currently available solar cells.…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Indoor Organic Photovoltaics

Alkhalayfeh

Aziz

Pakhuruddin

et al. 2021

Physica Status Solidi (a)

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Solar energy technologies provide solutions for the effective exploitation of internet of things (IoT)‐based applications such as smart devices. Organic photovoltaics (OPVs) fabricated from π‐conjugated carbon‐based semiconductors have shown great potential for indoor applications based on exceptional properties that include small current leakage under dim lighting, large absorption coefficient, and low‐cost solution processes. However, organic cells need additional enhancements, such as improving their dim light absorption and exploiting suitable bandgap materials, to make the best use of indoor lighting photons. This article highlights the crucial role of the theoretical basis of photovoltaics and reviews the effect of active layer thickness. Furthermore, the crucial advancements in material design for indoor OPVs are highlighted herein. Lastly, the contribution of plasmonic effect of metallic nanoparticles (MNPs) to improve the performance of OPVs is elaborated, which could contribute to raising the efficiency of energy conversion and reaching production scale criteria.

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“…The short-circuit current density ( J sc ) depends on the light intensity through the power-law shown below, Jnormalsc∝Iα, where α is the recombination value. The FF depends on the light intensity indirectly through V oc , shunt and series resistance [8,25].…”

Section: Introductionmentioning

confidence: 99%

“…Within a decade of their inception, the power conversion efficiency (PCE) of halide perovskite solar cells (under 1 Sun illumination) has increased from 3.9% to 25.5% [7]. With the emergence of the IoT, the field of indoor PV is receiving a rejuvenated research interest, and halide perovskites are the leading photovoltaic materials being explored along with dye sensitized and organic PV [1,8]. Halide perovskites have already demonstrated a PCE of 40% under indoor lighting, and their capability in powering the wireless sensors was also reported recently [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Hysteresis in hybrid perovskite indoor photovoltaics

Bulloch

Wang

Ghosh

et al. 2022

Phil. Trans. R. Soc. A.

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Halide perovskite indoor photovoltaics (PV) are a viable solution to autonomously power the billions of sensors in the huge technology field of the Internet of Things. However, there exists a knowledge gap in the hysteresis behaviour of these photovoltaic devices under indoor lighting conditions. The present work is the first experimental study dedicated to exploring the degree of hysteresis in halide perovskite indoor photovoltaic devices by carrying out both transient J–V scan and steady state maximum power point tracking (MPPT) measurements. Dependence of hysteresis on device architecture, selection of electron transporting layers and the composition of the perovskite photoactive layers were investigated. Under indoor illumination, the p-i-n MAPbI 3 -based devices show consistently high power conversion efficiency (PCE) (stabilized PCE) of greater than 30% and negligible hysteresis behaviour, whereas the n-i-p MAPbI 3 devices show poor performance (stabilized PCE ∼ 15%) with pronounced hysteresis effect. Our study also reveals that the n-i-p triple cation perovskite devices are more promising (stabilized PCE ∼ 25%) for indoor PV compared to n-i-p MAPbI 3 due to their suppressed ion migration effects. It was observed that the divergence of the PCE values estimated from the J–V scan measurements, and the maximum power point tracking method is higher under indoor illumination compared to 1 Sun, and hence for halide perovskite-based indoor PV, the PCE from the MPPT measurements should be prioritized over the J–V scan measurements. The results from our study suggest the following approaches for maximizing the steady state PCE from halide perovskite indoor PV: (i) select perovskite active layer composition with suppressed ion migration effects (such as Cs-containing triple cation perovskites) and (ii) for the perovskite composition such as MAPbI 3 , where the ion migration is very active, p-i-n architecture with organic charge transport layers is beneficial over the n-i-p architecture with conventional metal oxides (such as TiO 2 , SnO 2 ) as charge transport layers. This article is part of the theme issue ‘Developing resilient energy systems’.

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Wide-Bandgap Halide Perovskites for Indoor Photovoltaics

Cited by 36 publications

References 53 publications

Multimodal Approach towards Large Area Fully Semitransparent Perovskite Solar Module

Multimodal Approach towards Large Area Fully Semitransparent Perovskite Solar Module

Recent Development of Indoor Organic Photovoltaics

Hysteresis in hybrid perovskite indoor photovoltaics

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