Perovskite nanostructures: Leveraging quantum effects to challenge optoelectronic limits

Kulkarni, Sneha A.; Yantara, Natalia; Tan, K. T.; Mathews, Nripan; Mhaisalkar, Subodh

doi:10.1016/j.mattod.2019.10.021

Cited by 30 publications

(27 citation statements)

References 233 publications

(303 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optical studies of perovskite NC ensembles are valuable in guiding their efficient applications in classical optoelectronic devices, the current status of which has been detailed in several recent reviews. 73,74 At the single-particle level, the perovskite NCs are associated with unique single-photon emission characteristics and exciton fine structures, which have outlined a prospective route toward their potential usage in quantum information technologies.…”

mentioning

confidence: 99%

Optical studies of semiconductor perovskite nanocrystals for classical optoelectronic applications and quantum information technologies: a review

Cao

Zhang

et al. 2020

Adv. Photon.

View full text Add to dashboard Cite

Semiconductor perovskite films are now being widely investigated as light harvesters in solar cells with ever-increasing power conversion efficiencies, which have motivated the fabrication of other optoelectronic devices, such as light-emitting diodes, lasers, and photodetectors. Their superior material and optical properties are shared by the counterpart colloidal nanocrystals (NCs), with the additional advantage of quantum confinement that can yield size-dependent optical emission ranging from the near-UV to near-infrared wavelengths. So far, intensive research efforts have been devoted to the optical characterization of perovskite NC ensembles, revealing not only fundamental exciton relaxation and recombination dynamics but also lowthreshold amplified spontaneous emission and novel superfluorescence effects. Meanwhile, the application of single-particle spectroscopy techniques to perovskite NCs has helped to resolve a variety of optical properties for which there are few equivalents in traditional colloidal NCs, mainly including nonblinking photoluminescence, suppressed spectral diffusion, stable exciton fine structures, and coherent singlephoton emission. While the main purpose of ensemble optical studies is to guide the smooth development of perovskite NCs in classical optoelectronic applications, the rich observations from single-particle optical studies mark the emergence of a potential platform that can be exploited for quantum information technologies.

show abstract

mentioning

confidence: 99%

Optical studies of semiconductor perovskite nanocrystals for classical optoelectronic applications and quantum information technologies: a review

Cao

Zhang

et al. 2020

Adv. Photon.

View full text Add to dashboard Cite

show abstract

“…Solution-processed quasi-2D or mixed 3D-2D perovskite structures are already proved to be a potential material for light-emitting applications due to their quantum well structures enable efficient recombination of charge carriers into the 3D perovskites, enhancing the PL intensity, and crystal stability. [41][42][43] In a similar way, thermally evaporated quasi-2D perovskite films were utilized as an active layer in PeLEDs to further improve the device performance. [56] The PbBr 2 films were vacuum deposited on top of ITO-coated glass substrates (covered with spin-coated PEDOT : PSS layer) at a chamber pressure of 2 × 10 À 6 Torr.…”

Section: Green-emitting Peledsmentioning

confidence: 99%

“…But the optical properties of the APbI 3 perovskites slightly modify with the exchange in A ‐site cations, as the bandgap varies in this order of MA + (1.55 eV)> Cs + (1.5 eV)>FA + (1.45 eV), though the ionic radii of A ‐site cation ( Cs + , MA + , or FA + ) varies rapidly in the range of 1.8–2.5 Å [39,40] . The density functional theory (DFT) calculations revealed that the A ‐site cations do not contribute much to the electronic states close to the band edges [41] . This small variation in the bandgap energy has resulted from the change in the crystal lattice parameter after cation exchange.…”

Section: Characteristics Of Mhpsmentioning

confidence: 99%

“…The n =1 and ∞ values represent the pure 2D layered structure and pure 3D perovskite structure, respectively. Suitable incorporation of larger cations can lead to the formation of a range of quasi‐2D perovskites with diverse optical and electronic properties, that are suitable for various optoelectronic applications [41–43] . Quasi‐2D layered perovskites exhibit quantum‐well structure where the inorganic layers act as ‘well’ and the organic capping layers as ‘barrier’.…”

Section: Characteristics Of Mhpsmentioning

confidence: 99%

“…The organic counterparts act as an insulated barrier which in turn result in an enhancement of electron‐hole interaction and resulted in efficient radiative recombination and corresponding enhancement of the PL intensity. Quasi‐2D perovskites have shown stronger exciton binding energies, higher PLQY, better stability, and thin‐film surface morphology compared to their 3D bulk counterparts, which makes them excellent candidates for efficient lighting application [41–43] …”

Section: Characteristics Of Mhpsmentioning

confidence: 99%

See 2 more Smart Citations

Vacuum‐Processed Metal Halide Perovskite Light‐Emitting Diodes: Prospects and Challenges

et al. 2021

Self Cite

View full text Add to dashboard Cite

This thin-film growth process is suitable for application in the advancement of a large variety of display technologies. In this Review, we present an overview of current research advances in the field of perovskite thin films grown via vacuum techniques, a study of their photophysical properties, and integration in PeLEDs for the generation of different colors. We also highlight the current challenges and future prospects for the further development of vacuum processed PeLEDs.

show abstract

Thermal Evaporation for Halide Perovskite Optoelectronics: Fundamentals, Progress, and Outlook

Wang

et al. 2021

Advanced Optical Materials

View full text Add to dashboard Cite

Metal halide perovskites have rapidly advanced the field of optoelectronic devices, especially for photovoltaic (PV) and light‐emitting diode (LED) fields with efficiencies comparable to those well‐established technologies. However, most of the reported perovskite devices are fabricated using lab‐scale solution‐processing methods. The thermal evaporation (TE) method, a mature technique widely used in the semiconductor industry, could be a promising alternative technology for large‐area and scale‐up fabrication. Moreover, the TE method is free of toxic solvent, enables easy control of film thickness, and is compatible with existing industry. This review first presents the fundamentals of the TE method, with an emphasis on the growth mechanism of perovskite films. This is followed by the progress of thermally evaporated perovskite‐based optoelectronic devices, especially solar cells and light‐emitting diodes. Last, the device‐oriented design principles via TE technology are summarized and future development opportunities are overviewed.

show abstract

Perovskite nanostructures: Leveraging quantum effects to challenge optoelectronic limits

Cited by 30 publications

References 233 publications

Optical studies of semiconductor perovskite nanocrystals for classical optoelectronic applications and quantum information technologies: a review

Optical studies of semiconductor perovskite nanocrystals for classical optoelectronic applications and quantum information technologies: a review

Vacuum‐Processed Metal Halide Perovskite Light‐Emitting Diodes: Prospects and Challenges

Thermal Evaporation for Halide Perovskite Optoelectronics: Fundamentals, Progress, and Outlook

Contact Info

Product

Resources

About