Maximizing the optical performance of planar CH3NH3PbI3 hybrid perovskite heterojunction stacks

Phillips, Laurie J.; Rashed, Atef M.; Treharne, Robert E.; Kay, James; Yates, Peter J.; Mitrović, Ivona Z.; Weerakkody, Ayendra; Hall, Steve; Durose, K.

doi:10.1016/j.solmat.2015.10.007

Cited by 75 publications

(50 citation statements)

References 24 publications

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“…Its physical properties enable it work together with the low band gap PV materials (Silicon or CZTS). [ 124 ] (c) Besides, the device confi guration with the focus on assembling top and bottom cells should also be taken into careful Adv. For the top cell with a band gap of 1.55 eV, an effi ciency of around 30% can be realized.…”

Section: Tandem Solar Cells and Other Applicationsmentioning

confidence: 99%

The Progress of Interface Design in Perovskite‐Based Solar Cells

Fan

Huang

Wang

et al. 2016

Advanced Energy Materials

147

117

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Figure 20. a) Modeled J − V characteristics of a perovskite device comprising ions but no traps. b) Modeled I -V characteristics of perovskite devices comprising ions and no traps for varying ion densities. c) Modeled J − V characteristics of perovskite device comprising ions and traps with varying ion mobility as indicated in the legend at a sweep rate of 100 kV s −1 . d) Modeled J -V characteristics of a perovskite device comprising ions and bulk traps. [ 211 ] 2015, American Chemical Society. e) Flow directions of the charged ion species in a Pb|MAPbI 3 |AgI |Ag cell under electrical bias. f) Images for surfaces A and B and g) a scanning electron microscope (SEM) image of surface B on the Pb pellet. h) The same cell confi guration to Figure 23 e. i) Images of each pellets after aging at 50 °C for a week in Ar atmosphere (no current stressing). Reproduced with permission. [ 212 ]

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Section: Tandem Solar Cells and Other Applicationsmentioning

confidence: 99%

The Progress of Interface Design in Perovskite‐Based Solar Cells

Fan

Huang

Wang

et al. 2016

Advanced Energy Materials

147

117

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“…Optimization of perovskite film thickness depends on an interplay between film absorption, which requires a thick film, and carrier collection, dependent on diffusion length, which requires a thinner film. Phillips et al showed that a perovskite film with a thickness of 350 nm absorbs 85% of the available light . This implies that an optimized perovskite film with thickness 300 nm would benefit from a light trapping scheme.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, light absorption is dependent on the device architecture. Including a mesoporous layer increases scattering, which increases the path length of light . The absorption path length will be reduced for the planar structure; however, future commercialization depends on the simplicity of the cell processing.…”

Section: Introductionmentioning

confidence: 99%

Plasmonics in Organic and Perovskite Solar Cells: Optical and Electrical Effects

Chan

Wright

Elumalai

et al. 2016

Advanced Optical Materials

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Solution processed thin‐film solar technologies, such as organic photovoltaics, and more recently, perovskite solar cells, may provide low‐cost electricity generation. These technologies suffer from insufficient light absorption due to thin absorber layers. Plasmonic nanostructures have been incorporated in both technologies, initially with the aim of increasing light absorption, but reports have also shown significant enhancement in electrical characteristics in devices. Enhancement mechanisms that are facilitated by plasmonic nanostructures such as improved exciton dissociation and charge carrier transport, can occur concurrently with improved light absorption. This work surveys the myriad enhancement mechanisms and, importantly, discusses the extent of current understanding, as well as insights gained in plasmonics applications thus far. Given the substantial opportunities, the continuous focus on characterization and interpretation of enhancement mechanisms is imperative to unlock the full potential of plasmonic organic and perovskite solar cells. In particular, electrical or electronic effects from plasmonic nanostructure integration deserves further attention as a promising complement to improvements in device performance from optical effects.

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“…This will allow an efficient understanding and optimization of the PSC performance. In particular, we examine the effect of metal spheres embedded inside the perovskite layer for different metalmaterial (Subsection 3.2.1), sphere size and position (Subsection 3.2.2), and sphere concentration (i.e., occupied volume relative to the perovskite volume -Subsection 3.2.3); in all those studies we assume a constant perovskite layer thickness of 350 nm that is considered optimum regarding the PCE of the PSCs [9]. The spherical shape of nanoparticles was preferred when they are embedded inside the perovskite layer because it is associated with: (i) broadband extinction (scattering and absorption) cross-sections of high magnitude [see Fig.…”

Section: Plasmonic Nanoparticles Inside Perovskitementioning

confidence: 99%

“…Additionally, a reduction of the PSCs' toxicity [8], due to the presence of pure lead (Pb) in the perovskite materials, should be attained for their further commercialization. A possible solution to reduce the amount of the lead is to employ perovskite absorbers thinner than the optimum thickness [9] of about ~350 nm without though deteriorating the absorption of the solar cell. However, there is a main drawback using this approach, which is the small interaction time of the incoming wave with the very thin perovskite layer resulting to an unoptimized light collection.…”

Section: Introductionmentioning

confidence: 99%

Efficient and environmental-friendly perovskite solar cells via embedding plasmonic nanoparticles: an optical simulation study on realistic device architectures

Perrakis¹,

Kakavelakis²,

Kenanakis³

et al. 2019

Opt. Express

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Solution-processed, lead halide-based perovskite solar cells have overcome important challenges over the recent years, offering low-cost and high solar power conversion efficiencies. However, they still undergo unoptimized light collection due mainly to the thin (~350 nm) polycrystalline absorber layers. Moreover, their high toxicity (due to the presence of lead in the perovskite crystalline structure) makes it necessary that the thickness of the absorber layers to be further reduced, for their future commercialization, without reducing the device performance. Here we aim to address these issues via embedding spherical plasmonic nanoparticles of various sizes, composition, concentrations, and vertical positions, for the first time in realistic halide-based perovskite solar cells architecture, and to clarify their effect on the absorption properties and enhancement. We theoretically show that plasmon-enhanced near-field effects and scattering leads to a device photocurrent enhancement of up to ~7.3% when silver spheres are embedded inside the perovskite layer. Interestingly, the combination of silver spheres in perovskite and aluminum spheres inside the hole transporting layer (PEDOT:PSS) of the solar cell leads to an even further enhancement, of up to ~12%. This approach allows the employment of much thinner perovskite layers in PSCs (up to 150 nm) to reach the same photocurrent as the nanoparticles-free device and reducing thus significantly the toxicity of the device. Providing the requirements related to the size, shape, position, composition, and concentration of nanoparticles for the PSCs photocurrent enhancement, our study establishes guidelines for a future development of highly-efficient, environmentally friendly and low-cost plasmonic perovskite solar cells.

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Maximizing the optical performance of planar CH3NH3PbI3 hybrid perovskite heterojunction stacks

Cited by 75 publications

References 24 publications

The Progress of Interface Design in Perovskite‐Based Solar Cells

The Progress of Interface Design in Perovskite‐Based Solar Cells

Plasmonics in Organic and Perovskite Solar Cells: Optical and Electrical Effects

Efficient and environmental-friendly perovskite solar cells via embedding plasmonic nanoparticles: an optical simulation study on realistic device architectures

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