Evidence map›Paper›PMID 40134798›Full record

ArticleJoule2025

Enhancing Charge-Emitting Shallow Traps in Metal Halide Perovskites by >100 Times by Surface Strain.

Ying Zhou, Hengkai Zhang, Yeming Xian, Zhifang Shi, Jean Noalick Aboa, Chengbin Fei, Guang Yang, Nengxu Li, Farida A Selim, Yanfa Yan and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Joule, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Article
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  3. Review
  4. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Ying ZhouDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Hengkai ZhangDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Yeming XianDepartment of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH 43606, USA.
Zhifang ShiDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Jean Noalick AboaDepartment of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403, USA.
Chengbin FeiDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Guang YangDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Nengxu LiDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Farida A SelimSchool for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA.
Yanfa YanDepartment of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH 43606, USA.
Jinsong HuangDepartment of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.

Funding

Perovskite Based Foldable and Sensitive X-ray Imaging Detectors for Trauma CareR01EB033439 · NIBIB · UNIV OF NORTH CAROLINA CHAPEL HILL · PI HUANG, JINSONG · 2022 to 2025
$1.3M
NIBIB NIH HHS R01 EB033439
6 · The paper itself

Abstract

The low density of deep trapping defects in metal halide perovskites (MHPs) is essential for high-performance optoelectronic devices. Shallow traps in MHPs are speculated to enhance charges recombination lifetime. However, it is unknown about the shallow trap chemical nature and distribution, and impact on solar cell operation. Herein, we report that shallow traps are much richer in MHPs than traditional semiconductors. Their density can be enhanced by >100 times through local surface strain, indicating shallow traps mainly located at the surface. The surface strain is introduced by anchoring two-amine-terminated molecules onto formamidinium cations, and the shallow traps are formed by the band edge downshifting toward defect levels. The high-density shallow traps temporarily hold one type of charges and increased concentration of the other type of free carrier in working solar cells by keeping photogenerated charges from bimolecular recombination, resulting in reduced open circuit voltage loss to 317 mV.

Identifiers

PMID40134798
PMCPMC11936513

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.