Advances in stability of perovskite solar cells

Wali, Qamar; Iftikhar, Faiza Jan; Khan, Muhammad Ejaz; Ullah, Abid; Iqbal, Yaseen; Jose, Rajan

doi:10.1016/j.orgel.2019.105590

Cited by 130 publications

(98 citation statements)

References 104 publications

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“…100 Indeed, to the best of our knowledge, today the longest demonstrated operational stability of metal-based PSCs is 5000 h (illuminated with intensity of 13 mW cm À2 , which is almost 1/8 of the Sun irradiation intensity, under relative humidity of 70%), which is still too low for passing international PV standards of long-term stability. 24,47,101 2.1.4. Encapsulation of PSCs.…”

Section: View Article Onlinementioning

confidence: 99%

“…[17][18][19] In PV applications, once the device efficiencies became comparable to those of the well-established technologies such as mono-or poly-crystalline silicon, the aspect of performance stability became the center of attention for scientists working on perovskite PV. [20][21][22][23][24] Considering the nature of metal-halide perovskite, it has been noticed that one of its most-appealing points -low energetic barrier for crystal formation -is also one of its biggest drawbacks. 25 This peculiar material characteristic allows for quick liquid processing during cell production, while simultaneously possessing ''soft ionic crystal'' properties prone to multiple defects and degradation mechanisms due to weak metal-halide bonds.…”

Section: Introductionmentioning

confidence: 99%

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Low-temperature carbon-based electrodes in perovskite solar cells

Bogachuk

Zouhair

Wojciechowski

et al. 2020

Energy Environ. Sci.

159

155

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Section: View Article Onlinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low-temperature carbon-based electrodes in perovskite solar cells

Bogachuk

Zouhair

Wojciechowski

et al. 2020

Energy Environ. Sci.

159

155

View full text Add to dashboard Cite

show abstract

“…[20] Although a large number of noteworthy developments have taken place in the research field of hybrid halide perovskites since its inception, the material still possesses a couple of major limitations, namely toxicity of lead and long-term ambient stability. [21,22] To address these inadequacies, contemporary researches expectedly focused mostly on materials engineering in CH 3 NH 3 PbI 3 ; in this direction, the substitution of lead by a suitable metal and use of a bulky organic cation at the A-site have shown further promises. [23,24] As a consequence, the prototype perovskite, CH 3 NH 3 PbI 3 , has now become the representative of a large family of analogous compounds appropriate for efficient solar cell applications.…”

Section: Introductionmentioning

confidence: 99%

Defects and Their Passivation in Hybrid Halide Perovskites toward Solar Cell Applications

et al. 2020

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The rise of hybrid metal–halide perovskites as potential solar energy materials has revolutionized research on next‐generation solar cells. According to recent studies, the rationale behind such success is the rich defect physics of materials. Studies on the origin of different types of prevailing defects, their formation, and mechanism of defect passivation have hence become decisive avenues. Herein, the possible origins of defects and different defect analysis techniques in hybrid halide perovskites are discussed. While initiating the discussion with the archetypal methylammonium lead halide, perovskites beyond the conventional ABX3 structure are included. In this direction, some major advancements to date on defect formation in the bulk of hybrid halide perovskites, at the grains and grain boundaries, are summarized. Numerous effective methods to passivate the defects and the adverse effect of defects on device efficiency are further highlighted. Hence, the prospect of defect engineering in perovskite materials is pointed toward improving the power conversion efficiency and long‐term stability of perovskite solar cells (PSCs). The discussion rightfully addresses that the in‐depth exploration of defect engineering is anticipated to have a gigantic impact toward the achievement of predicted efficiency in metal–halide PSCs.

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“…[ 3–5 ] A wide range of processes have optimized the absorber thickness, electron and hole transport layers (ETL and HTL) for device efficiency to approach Shockley–Queisser (SQ) limits of 30–33% in the bandgap range of 1.2–1.6 eV [ 6–10 ] and advanced encapsulation techniques for stability. [ 11,12 ] Despite the promise of HPSCs, there is an ongoing search for low‐toxicity Pb‐free halide perovskite absorbers to address the stability and toxicity challenges. [ 13,14 ] Replacement of Pb 2+ with Sn 2+ and Ge 2+ has shown promise with PCEs of 9.6%, 9.06%, and 7.11% for (GA,FA)SnI 3 , [ 15 ] (FA,MA)GeSnI 3 , [ 16 ] CsSn 0.5 Ge 0.5 I 3 , [ 17 ] respectively.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Pb‐Free Perovskite Absorber Materials: Prospects and Challenges

2020

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Optoelectronic properties of organic-inorganic halide perovskites are exceptional with solar cells showing efficiency comparable with conventional photovoltaic technologies. However, with issues of material stability and toxicity of Pb, it is important to understand if Pb can be replaced while maintaining the high power conversion efficiencies of (FA,MA,Cs)Pb(I,Br) 3. Herein, practical efficiency limits of Pb and Pb-free perovskite absorbers are analyzed using a 1D simulator for n-i-p or p-in device structures. SCAPS-1D baseline models for perovskite absorber materials with and without Pb are developed to numerically reproduce the experimental current density-voltage (JV) and external quantum efficiency (EQE) of champion devices from literature. From these baseline models, the efficiency limits are determined based on optimizing the interface band alignments, reduction in midgap defect density, increased absorption coefficient, and no parasitic losses. SCAPS-1D simulations suggest that 1) theoretically determined efficiency limit of Cs 2 PtI 6 perovskites is comparable with (FA,MA,Cs)Pb(I,Br) 3 perovskites, 2) FA 4 GeSbCl 12 is a promising photoabsorber; and 3) for efficient photoconversion with Sn-, Ge-, Ti-, or Ag-based compounds, a reduction of defect density and increase in absorption coefficient is needed.

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Advances in stability of perovskite solar cells

Cited by 130 publications

References 104 publications

Low-temperature carbon-based electrodes in perovskite solar cells

Low-temperature carbon-based electrodes in perovskite solar cells

Defects and Their Passivation in Hybrid Halide Perovskites toward Solar Cell Applications

Numerical Analysis of Pb‐Free Perovskite Absorber Materials: Prospects and Challenges

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