Perovskites for Optoelectronics

Detection

Highly sensitive X-ray detector made of layered perovskite-like (NH₄)₃Bi₂I₉ single crystal with anisotropic response

Renzhong Zhuang et al., Nat. Photon. 13, 602-608 (2019) doi:10.1038/s41566-019-0466-7

Perovskite-like materials enable different X-ray detection performance along different crystal directions. A low detection limit of 55 nGyair ^-1 is demonstrated. Shareable link

Circularly polarized light detection using chiral hybrid perovskite

Chao Chen et al., Nat. Commun. 10, 1927 (2019) doi:10.1038/s41467-019-09942-z

Optics-free circularly-polarized light detection has suffered from extremely low responsivity. Here Chen et al. demonstrate chiral organic–inorganic hybrid perovskite based detectors to distinguish circularly-polarized light with high responsivity of 797 mA/W.

Multi-inch single-crystalline perovskite membrane for high-detectivity flexible photosensors

Yucheng Liu et al., Nat. Commun. 9, 5302 (2018) doi:10.1038/s41467-018-07440-2

Hybrid halide perovskite single crystals show excellent optoelectronic properties but their small size and large thickness limit their application. Herein Liu et al. grow large area ultrathin flexible crystalline membrane of layered perovskite and demonstrate high detectivity in the flexible photosensors.

All-inorganic perovskite nanocrystal scintillators

Qiushui Chen et al., Nature 561, 88-93 (2018) doi:10.1038/s41586-018-0451-1

Scintillator materials can absorb high-energy X-rays and re-emit the energy as visible light, which is crucial for a range of applications involving radiation exposure such as security inspection, X-ray astronomy, and medical radiography. Scintillator devices are usually made from bulk crystals that are grown at high temperatures. Xiaogang Liu and colleagues now show that perovskite nanocrystals offer an alternative low-cost platform, which is solution-processable at relatively low temperatures, with properties that are relatively easy to tune. Shareable link

From the archive

Single-crystalline layered metal-halide perovskite nanowires for ultrasensitive photodetectors

Jiangang Feng et al., Nat. Electron. 1, 404-410 (2018) doi:10.1038/s41928-018-0101-5

Photodetectors made from single-crystalline nanowire arrays of layered metal-halide perovskites exhibit detectivities of more than 7 × 10¹⁵ jones, due to a nanowire structure that combines high resistance in the interior of the crystals and high conductivity at the edges of the crystals. Shareable link

High spectral resolution of gamma-rays at room temperature by perovskite CsPbBr₃ single crystals

Yihiu He et al., Nat. Commun. 9, 1609 (2018) doi:10.1038/s41467-018-04073-3

Detection and spectroscopic measurements of γ-ray used to rely on expensive materials such as CdZnTe crystals. Here He et al. develop a melt method to grow large size CsPbBr₃ perovskite crystals and the devices achieve low cost, high energy resolving capabilities and stability.

Cs₂AgBiBr₆ single-crystal X-ray detectors with a low detection limit

Weicheng Pan et al., Nat. Photon. 11, 726-732 (2017) doi:10.1038/s41566-017-0012-4

Double perovskite Cs₂AgBiBr₆ single crystals are used to make a sensitive X-ray detector. The device exhibits a high sensitivity of 10⁵ µC Gy_air⁻¹ cm⁻² and a low detection limit of 59.7 nGy_airs⁻¹, and demonstrates long-term operational stability. Shareable link

Dopant compensation in alloyed CH₃NH₃PbBr_3−xCl_x perovskite single crystals for gamma-ray spectroscopy

Haotong Wei et al., Nat. Mater. 16, 826-833 (2017) doi:10.1038/nmat4927

Hybrid organic–inorganic perovskite single crystals with optimized combination of Cl and Br ions are used to fabricate γ-ray detectors operating at room temperature and competing with the performance of sodium iodide scintillators. Shareable link

High-performance direct conversion X-ray detectors based on sintered hybrid lead triiodide perovskite wafers

Shreetu Shrestha et al., Nat. Photon. 11, 436-440 (2017), doi:10.1038/nphoton.2017.94 

Methyl ammonium lead triiodide perovskite wafers for application in direct conversion X-ray detectors are fabricated by a room-temperature sintering process. A conversion efficiency of 2,527 mC Gy_aircm^–2 under 70 kVp X-ray exposure is obtained. Shareable link

Monolithic integration of hybrid perovskite single crystals with heterogenous substrate for highly sensitive X-ray imaging 

Wei Wei et al., Nat. Photon. 11, 315–321 (2017), doi:10.1038/nphoton.2017.43

Hybrid perovskite crystals are integrated onto silicon wafers enabling fabrication of an X-ray linear detector array. High sensitivity may reduce patient dose in medical imaging applications. Shareable link

Field-emission from quantum-dot-in-perovskite solids

F. Pelayo Garcia de Arquer et al., Nat. Commun. 8, 14757 (2017) doi:10.1038/ncomms14757

Efficient implementation of quantum dot and well architectures are restricted to costly vacuum-epitaxially-grown semiconductors. The authors use quantum dots in perovskite to build field-emission photodiodes that are sensitive across the visible and into the short-wavelength infrared.

Detection of gamma photons using solution-grown single crystals of hybrid lead halide perovskites

Sergii Yakunin et al., Nat. Photon. 10, 585-589 (2016), doi:10.1038/nphoton.2016.139

Cheap and sensitive gamma-ray detectors are desired for defence, medical and research applications. Solid-state gamma-radiation detectors made from solution-grown perovskites have now been demonstrated for multiple practical applications. Shareable Link

Sensitive x-ray detectors made of methylammonium lead tribromide perovskite single crystals

Haotong Wei et al., Nat. Photon. 10, 333-339 (2016), doi:10.1038/nphoton.2016.41

Single-crystal perovskite devices 2–3 mm thick exhibit 16.4% X-ray detection efficiency with sensitivity four times higher than α-Se X-ray detectors. Shareable Link

Filterless narrowband visible photodetectors

Qianqian Lin et al., Nat. Photon. 9, 687-694 (2015), doi:10.1038/nphoton.2015.175

Photodiodes with an intrinsic narrow spectral response make it possible to discriminate between red, green and blue light without the need for any optical filters. Shareable Link

Ambipolar solution-processed hybrid perovskite phototransistors

Feng Li et al., Nat. Commun. 6, 8238 (2015), doi:10.1038/ncomms9238

Organolead halide perovskites exhibit good optoelectronic properties. Here, the authors fabricated and characterized ambipolar phototransistors based on solution-processed organolead triiodide and mixed-halide perovskites exhibiting high electron and hole mobilities and high photoresponsivities. 

Highly narrowband perovskite single-crystal photodetectors enabled by surface-charge recombination 

Yanjun Fang et al., Nat. Photon. 9, 679-686 (2015), doi:10.1038/nphoton.2015.156

Hybrid perovskite single-crystal photodetectors with a very narrow spectral response of <20 nm FWHM are reported. Shareable Link