Evidence map›Paper›PMID 33511480›Full record

ArticleNanoscale research letters2021

Photoelectrical Properties Investigated on Individual Si Nanowires and Their Size Dependence.

Xiaofeng Hu, Shujie Li, Zuimin Jiang, Xinju Yang

Abstract read
In one paragraph

Article in Nanoscale research letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

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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

1 citing paper in PubMed.

  1. Article
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

4 authors.

Xiaofeng HuState Key Laboratory of Surface Physics, Fudan University, Shanghai, 200433, China.
Shujie LiState Key Laboratory of Surface Physics, Fudan University, Shanghai, 200433, China.
Zuimin JiangState Key Laboratory of Surface Physics, Fudan University, Shanghai, 200433, China.
Xinju YangState Key Laboratory of Surface Physics, Fudan University, Shanghai, 200433, China. xjyang@fudan.edu.cn.ORCID http://orcid.org/0000-0002-6434-4342

Funding

Natural Science Foundation of Shanghai 17ZR1402600
6 · The paper itself

Abstract

Periodically ordered arrays of vertically aligned Si nanowires (Si NWs) are successfully fabricated with controllable diameters and lengths. Their photoconductive properties are investigated by photoconductive atomic force microscopy (PCAFM) on individual nanowires. The results show that the photocurrent of Si NWs increases significantly with the laser intensity, indicating that Si NWs have good photoconductance and photoresponse capability. This photoenhanced conductance can be attributed to the photoinduced Schottky barrier change, confirmed by I-V curve analyses. On the other hand, electrostatic force microscopy (EFM) results indicate that a large number of photogenerated charges are trapped in Si NWs under laser irradiation, leading to the lowering of barrier height. Moreover, the size dependence of photoconductive properties is studied on Si NWs with different diameters and lengths. It is found that the increasing magnitude of photocurrent with laser intensity is greatly relevant to the nanowires' diameter and length. Si NWs with smaller diameters and shorter lengths display better photoconductive properties, which agrees well with the size-dependent barrier height variation induced by photogenerated charges. With optimized diameter and length, great photoelectrical properties are achieved on Si NWs. Overall, in this study the photoelectrical properties of individual Si NWs are systematically investigated by PCAFM and EFM, providing important information for the optimization of nanostructures for practical applications.

Indexed as

Electrostatic force microscopyPhotoconductive atomic force microscopyPhotoconductive propertySi nanowiresSize-dependence

Identifiers

PMID33511480
PMCPMC7843832

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