eprintid: 10059461
rev_number: 17
eprint_status: archive
userid: 608
dir: disk0/10/05/94/61
datestamp: 2018-10-30 13:35:31
lastmod: 2021-09-18 21:49:06
status_changed: 2018-10-30 13:35:31
type: article
metadata_visibility: show
creators_name: Wang, Y
creators_name: Zhang, T
creators_name: Zhang, P
creators_name: Liu, D
creators_name: Ji, L
creators_name: Chen, H
creators_name: Chen, ZD
creators_name: Wu, J
creators_name: Li, S
title: Solution processed PCBM-CH3NH3PbI3 heterojunction photodetectors with enhanced performance and stability
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
keywords: PCBM-CH3NH3PbI3 heterojunction, Solvent engineering, Photodetector, Stable
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: In this work, an anti-solvent process was used to fabricate a perovskite-PCBM bulk heterojunction, in which PCBM diffused in CH3NH3PbI3 and passivated grain boundary defects. Different concentrations of PCBM were studied in this paper. When a low concentration (5 mg/ml, 10 mg/ml or 15 mg/ml) of PCBM was used, the PCBM-CH3NH3PbI3 transition layer provided efficient electron collection. With the increase of the concentration of PCBM, a thicker PCBM layer was formed in the bulk heterojunction. Such a thick PCBM resulted in rough perovskite morphology and low photo-carrier collection efficiency. SEM images and metallographic microscope images confirmed that the PCBM upper layer gradually covered grain boundaries of perovskite films with the increase of the PCBM concentration. On the other hand, low concentrations of PCBM improved the light absorption and crystallinity of CH3NH3PbI3 films. The PCBM/perovskite heterojunction exhibited a high UV responsivity of 0.18 AW-1 and a response time less than 123 ms. This research provides a way to improve the quality of perovskite films and the performance of perovskite photodetectors.
date: 2018-06-01
date_type: published
publisher: ELSEVIER SCIENCE BV
official_url: http://doi.org/10.1016/j.orgel.2018.02.043
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1555197
doi: 10.1016/j.orgel.2018.02.043
lyricists_name: Wu, Jiang
lyricists_id: JWUXX91
actors_name: Wu, Jiang
actors_id: JWUXX91
actors_role: owner
full_text_status: public
publication: Organic Electronics
volume: 57
pagerange: 263-268
pages: 6
issn: 1878-5530
citation:        Wang, Y;    Zhang, T;    Zhang, P;    Liu, D;    Ji, L;    Chen, H;    Chen, ZD;         ... Li, S; + view all <#>        Wang, Y;  Zhang, T;  Zhang, P;  Liu, D;  Ji, L;  Chen, H;  Chen, ZD;  Wu, J;  Li, S;   - view fewer <#>    (2018)    Solution processed PCBM-CH3NH3PbI3 heterojunction photodetectors with enhanced performance and stability.                   Organic Electronics , 57    pp. 263-268.    10.1016/j.orgel.2018.02.043 <https://doi.org/10.1016/j.orgel.2018.02.043>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10059461/1/Solution%20processed%20detectors.pdf