Photocarrier Recombination and Injection Dynamics in Long-Term Stable Lead-Free CH3NH3SnI3 Perovskite Thin Films and Solar Cells

Handa, Taketo; Yamada, Takumi; Kubota, Hirofumi; Ise, Shogo; Miyamoto, Yoshinari; Kanemitsu, Yoshihiko

doi:10.1021/acs.jpcc.7b06199

Cited by 96 publications

(130 citation statements)

References 56 publications

Supporting

Mentioning

114

Contrasting

Unclassified

Order By: Relevance

“…Cahen and co‐workers found that SnF 2 can also increase the work function and ionization potential and enhance the stability of Sn‐based perovskites . In addition, SnF 2 was reported to increase the photocarrier lifetime and diffusion lengths of Sn‐based materials.…”

Section: Performance Of Sn‐based Perovskite Solar Cellsmentioning

confidence: 99%

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

2018

View full text Add to dashboard Cite

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201803230.The tremendous interest focused on organic-inorganic halide perovskites since 2012 derives from their unique optical and electrical properties, which make them excellent photovoltaic materials. Pb-based halide perovskite solar cells, in particular, currently stand at a record efficiency of ≈23%, fulfilling their potential toward commercialization. However, because of the toxicity concerns of Pb-based perovskite solar cells, their market prospects are hindered. In principle, Pb can be replaced with other less-toxic, environmentally benign metals. Sn-based perovskites are thus the far most promising alternative due to their very similar and perhaps even superior semiconductor characteristics. After years of effort invested in Sn-based halide perovskites, sufficient breakthroughs have finally been achieved that make them the next runners up to the Pb halide perovskites. To help the reader better understand the nature of Sn-based halide perovskites, their optical and electrical properties are systematically discussed. Recent progress in Sn-based perovskite solar cells, focusing mainly on film fabrication methods and different device architectures, and highlighting roadblocks to progress and opportunities for future work are reviewed. Finally, a brief overview of mixed Sn/Pb-based systems with their anomalous yet beneficial optical trends are discussed. The current challenges and a future outlook for Sn-based perovskites are discussed.

show abstract

Section: Performance Of Sn‐based Perovskite Solar Cellsmentioning

confidence: 99%

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

2018

View full text Add to dashboard Cite

show abstract

“…(a) Reprinted with permission from [71], copyright 2017 American Chemical Society; (b) Reprinted with permission from [80], copyright 2017 American Chemical Society; (c) Reprinted with permission from [118], copyright 2017 American Chemical Society.…”

Section: Reviewmentioning

confidence: 99%

Lead-free hybrid perovskites for photovoltaics

Stroyuk¹

2018

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

This review covers the state-of-the-art in organo–inorganic lead-free hybrid perovskites (HPs) and applications of these exciting materials as light harvesters in photovoltaic systems. Special emphasis is placed on the influence of the spatial organization of HP materials both on the micro- and nanometer scale on the performance and stability of perovskite-based solar light converters. This review also discusses HP materials produced by isovalent lead(II) substitution with Sn2+ and other metal(II) ions, perovskite materials formed on the basis of M3+ cations (Sb3+, Bi3+) as well as on combinations of M+/M3+ ions aliovalent to 2Pb2+ (Ag+/Bi3+, Ag+/Sb3+, etc.). The survey is concluded with an outlook highlighting the most promising strategies for future progress of photovoltaic systems based on lead-free perovskite compounds.

show abstract

“…The main reason for such lowered performance is that tin‐based perovskites can easily become heavily p‐doped as a result of tin vacancy formation during synthesis or later degradation processes . As a result, charge‐carrier lifetimes are found to be lower than for lead‐based perovskites, leading to increased recombination losses, shortened charge‐carrier diffusion lengths, and dramatically decreased device performance …”

mentioning

confidence: 99%

The Effects of Doping Density and Temperature on the Optoelectronic Properties of Formamidinium Tin Triiodide Thin Films

et al. 2018

View full text Add to dashboard Cite

Optoelectronic properties are unraveled for formamidinium tin triiodide (FASnI ) thin films, whose background hole doping density is varied through SnF addition during film fabrication. Monomolecular charge-carrier recombination exhibits both a dopant-mediated part that grows linearly with hole doping density and remnant contributions that remain under tin-enriched processing conditions. At hole densities near 10 cm , a strong Burstein-Moss effect increases absorption onset energies by ≈300 meV beyond the bandgap energy of undoped FASnI (shown to be 1.2 eV at 5 K and 1.35 eV at room temperature). At very high doping densities (10 cm ), temperature-dependent measurements indicate that the effective charge-carrier mobility is suppressed through scattering with ionized dopants. Once the background hole concentration is nearer 10 cm and below, the charge-carrier mobility increases with decreasing temperature according to ≈T , suggesting that it is limited mostly by intrinsic interactions with lattice vibrations. For the lowest doping concentration of 7.2 × 10 cm , charge-carrier mobilities reach a value of 67 cm V s at room temperature and 470 cm V s at 50 K. Intraexcitonic transitions observed in the THz-frequency photoconductivity spectra at 5 K reveal an exciton binding energy of only 3.1 meV for FASnI , in agreement with the low bandgap energy exhibited by this perovskite.

show abstract

Photocarrier Recombination and Injection Dynamics in Long-Term Stable Lead-Free CH₃NH₃SnI₃ Perovskite Thin Films and Solar Cells

Cited by 96 publications

References 56 publications

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells

Lead-free hybrid perovskites for photovoltaics

The Effects of Doping Density and Temperature on the Optoelectronic Properties of Formamidinium Tin Triiodide Thin Films

Contact Info

Product

Resources

About