Photonics Research, Volume. 9, Issue 5, 781(2021)
Environment-friendly antisolvent tert-amyl alcohol modified hybrid perovskite photodetector with high responsivity
Fig. 1. (a) Device architecture of PDs. (b) Cross-sectional SEM image of each layer in the device with a structure of (a). (c), (d) Cross-sectional EDS mapping images of different elements for each layer of the device in (a). (e) Schematic processing scheme of the antisolvent-assisted perovskite deposition process; the dashed parts are the chemical structures of antisolvents used in this work (TAA, TL, CB, nBA, and IPA).
Fig. 2. (a) Photograph of TAA-PSK film on ITO glass before annealing. (b) FTIR spectra of TAA-PSK films with and without annealing. (c) Photographs of different antisolvents processed films after annealing.
Fig. 3. Energy band and charge transfer diagram of PDs.
Fig. 4. Optical properties of different antisolvent-processed films. (a) Absorption spectra. (b) XRD patterns. (c) Steady-state PL spectra; inset plots the corresponding emission peak position. (d) TRPL spectra; inset plots the values of
Fig. 5. Morphologies of different antisolvents processed perovskite films. (a)–(e) Top-view SEM images; the scale bar is 1 μm. (f)–(j) AFM images; the scanned area is
Fig. 6. Grain-size distribution histograms of films based on (a) TAA-PSK, (b) TL-PSK, (c) CB-PSK, (d) nBA-PSK, and (e) IPA-PSK measured by SEM images with the scale bar of 1 μm.
Fig. 7. Electrical properties of PDs. (a)
Fig. 8. Photoswitching properties of the PDs. (a) Photoswitching characteristics of the TAA-PD measured alternately in dark and under 532 nm laser illumination (
Fig. 9. Electrical and photoswitching properties of TL-PD. (a)
Fig. 10. Electrical and photoswitching properties of CB-PD. (a)
Fig. 11. Electrical and photoswitching properties of nBA-PD. (a)
Fig. 12. Electrical and photoswitching properties of IPA-PD. (a)
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Tengteng Li, Qingyan Li, Xin Tang, Zhiliang Chen, Yifan Li, Hongliang Zhao, Silei Wang, Xin Ding, Yating Zhang, Jianquan Yao. Environment-friendly antisolvent tert-amyl alcohol modified hybrid perovskite photodetector with high responsivity[J]. Photonics Research, 2021, 9(5): 781
Category: Optoelectronics
Received: Dec. 2, 2020
Accepted: Jan. 20, 2021
Published Online: Apr. 26, 2021
The Author Email: Yating Zhang (yating@tju.edu.cn)