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Intrinsic glassy-metallic transport in an amorphous coordination polymer
An unusual new material, NiTTFtt, is reported that is structurally amorphous, precluding a classical band structure, but detailed characterization reveals high conductivity and a metallic character.
- Jiaze Xie
- , Simon Ewing
- & John S. Anderson
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Article |
Polypeptide organic radical batteries
An environmentally friendly, all-organic radical battery is demonstrated, in which redox-active polypeptides perform as both cathode and anode materials, with a metal-free organic electrolyte.
- Tan P. Nguyen
- , Alexandra D. Easley
- & Karen L. Wooley
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Article |
Ligand-engineered bandgap stability in mixed-halide perovskite LEDs
The binding of multidentate ligands to the surface of lead halide perovskite nanocrystals suppresses the formation of surface defects that result in halide segregation, yielding materials with efficient and colour-stable red emission.
- Yasser Hassan
- , Jong Hyun Park
- & Henry J. Snaith
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Article |
Two-dimensional halide perovskite lateral epitaxial heterostructures
An epitaxial growth strategy that improves the stability of two-dimensional halide perovskites by inhibiting ion diffusion in their heterostructures using rigid π-conjugated ligands is demonstrated, and shows near-atomically sharp interfaces.
- Enzheng Shi
- , Biao Yuan
- & Letian Dou
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Article |
Multivalent anions as universal latent electron donors
Multivalent anions are found to be capable of electron-doping polymer semiconductors to realize conductive films with very low work functions, which enable efficient electron injection into materials with low electron affinity.
- Cindy G. Tang
- , Mazlan Nur Syafiqah
- & Peter K. H. Ho
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Letter |
Lattice anchoring stabilizes solution-processed semiconductors
The stability of both colloidal quantum dots and perovskites can be improved by combining them into a hybrid material in which matched lattice parameters suppress the formation of undesired phases.
- Mengxia Liu
- , Yuelang Chen
- & Edward H. Sargent
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Letter |
Monolayer atomic crystal molecular superlattices
Superlattices consisting of alternating monolayer atomic crystals and molecular layers allow access to stable phosphorene monolayers with competitive transistor performance and to bulk monolayer materials with tunable optoelectronic properties.
- Chen Wang
- , Qiyuan He
- & Xiangfeng Duan
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Letter |
Perovskite nickelates as electric-field sensors in salt water
Application of an electric field changes the transport and optical properties of samarium nickelate submerged in water, making it a suitable passive sensor of weak electric fields in salt water.
- Zhen Zhang
- , Derek Schwanz
- & Shriram Ramanathan
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Letter |
Compositional engineering of perovskite materials for high-performance solar cells
Inorganic–organic lead halide perovskite could be efficient when used as the light-harvesting component of solar cells; here incorporation of methylammonium lead bromide into formamidinium lead iodide stabilizes the perovskite and improves the power conversion efficiency of the solar cell up to 17.9 per cent.
- Nam Joong Jeon
- , Jun Hong Noh
- & Sang Il Seok
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Letter |
Large, non-saturating magnetoresistance in WTe2
The magnetoresistance effect in WTe2, a layered semimetal, is extremely large: the electrical resistance can be changed by more than 13 million per cent at very high magnetic fields and low temperatures.
- Mazhar N. Ali
- , Jun Xiong
- & R. J. Cava
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Letter |
A low-cost non-toxic post-growth activation step for CdTe solar cells
MgCl2 is shown to be a cheap and non-toxic replacement for the costly and environmentally unfriendly salt CdCl2 that has long been used as the ‘activation’ step in the production of cadmium telluride solar cells.
- J. D. Major
- , R. E. Treharne
- & K. Durose
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Letter |
Dicalcium nitride as a two-dimensional electride with an anionic electron layer
The ionic crystal Ca2N is shown to be an electride in terms of [Ca2N]+·e−, with diffusive two-dimensional transport in dense electron layers.
- Kimoon Lee
- , Sung Wng Kim
- & Hideo Hosono
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News |
Boron finally gets a triple bond
Compound could be useful in organic electronic materials.
- James Mitchell Crow
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Research Highlights |
High-voltage plant proteins
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News |
Transparent battery powers the way to translucent devices
Researchers fabricate electrodes that are too small to see.
- Duncan Graham-Rowe
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News Explainer |
Intel enters the third dimension
World's biggest chip manufacturer unveils radical chip design.
- Jon Cartwright
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News |
Russian money revives Plastic Logic
Deal gives nascent field of plastic electronics a shot in the arm.
- Edwin Cartlidge
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Research Highlights |
Physics: Insulator insight into constant
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Correspondence |
Esaki diode is still a radio star, half a century on
- Leo Esaki
- , Yasuhiko Arakawa
- & Masatoshi Kitamura
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News Feature |
Networking: Four ways to reinvent the Internet
The Internet is struggling to keep up with the ever-increasing demands placed on it. Katharine Gammon looks at ways to fix it.
- Katharine Gammon
Photocatalytic doping of organic semiconductors