Fig. 1. (a), (b) Schematic crystal structure of representative perovskite materials
CH3NH3PbI3 and
CsPbBr3, simulated from Vesta.3 Software; (c) comparative optical absorption behavior of semiconducting materials. Reproduced from Ref. [
6] with permission. Copyright 2014, Springer Nature.
Fig. 2. Schematic diagrams of working principle of SPPDs in PV mode: heterojunction type (left side) and Schottky type (right side).
Fig. 3. (a) Preparation process of the
MAPbBr3/MAPbIxBr3−x heterojunction; (b) responsivity of
APbBr3/MAPbIxBr3−x and single crystal
MAPbBr3 PDs at zero bias under the incident light with wavelengths of 350–800 nm and 400–800 nm, respectively; (c) schematic energy level diagram at the
MAPbBr3/MAPbIxBr3−x junction under irradiation. Reproduced with permission from Ref. [
56]. Copyright 2016, American Institute of Physics. (d) Photographic image of the as-grown heterostructure single crystal (top); SEM image of the heterostructure interface (bottom). (e) Band diagram of the
(4-AMP)(MA)2Pb3Br10/MAPbBr3 heterostructure detector; (f) plots of the
R and
D* as a function of light intensity; (g) response speed of
(4-AMP)(MA)2Pb3Br10/MAPbBr3 heterostructure device at rise edges and fall edges. Reproduced with permission from Ref. [
57]. Copyright 2020, Wiley-VCH. (h) Schematic illustration of the Au–Al electrodes separated by 30 μm on
MAPbI3 single crystal; (i) schematic illustration of the working mechanism for Schottky junction based on asymmetric electrodes; (j) photocurrent response of
Au/MAPbI3/Al device at different wavelengths; (k) spectral photoresponsivity of
MAPbI3 single crystal PD. Reproduced with permission from Ref. [
58]. Copyright 2016, Royal Society of Chemistry.
Fig. 4. (a) Photographic image of
CsPbBr3 single crystal; (b)
I-
V curve of device
Au/CsPbBr3/Pt in dark and under illumination; (c) photoresponse of device
Au/CsPbBr3/Pt under light pulses measured under zero bias. Reproduced with permission from Ref. [
28]. Copyright 2017, Wiley-VCH. (d) Carrier separation transmission diagram of the device based on
CH3NH3PbI3 single crystal PD; (e) variation of light responsivity of devices with different channel widths; (f) dependence of responsivity and on–off ratio on the light intensity. Reproduced with permission from Ref. [
60]. Copyright 2021, Elsevier.
Fig. 5. (a) Schematic illustration of
MAPbI3 NC synthesis; (b) TEM image of
MAPbI3 NCs (the inset shows
MAPbI3 nanocrystal size distribution plot); (c) schematic diagram of the
MAPbI3 NC based self-powered PD; (d)
J-
V curves of the
MAPbI3 NC-based self-powered PD under 808 nm illumination; (e) photocurrent versus time for the PD under light on/off cycles at 0 V under 808 nm illumination. Reproduced with permission from Ref. [
50]. Copyright 2020, Wiley-VCH. (f) Cross-sectional SEM image of ITO/ZnO(70 nm)/CdS(150 nm) /
CsPbBr3(200 nm)/Au trilayer PDs; (g)
I-
V curve of trilayer PD device in dark and under
85 μW cm−2 405 nm illumination; (h) potential charges generation and transportation process under
85 μW cm−2 405 nm illumination illustrated by band diagram. Reproduced with permission from Ref. [
67]. Copyright 2020, Institute of Physics.
Fig. 6. (a) Schematic illustration of the synthesis process of the
CsPbBr3 NWs and
CsPbBr3 micro- and nanostructures; (b) schematic illustration of the perovskite NW PD; (c) energy band diagram of the perovskite NW PD. (d)
J-
t curve at the light intensity of
6.4×10−4 mW cm−2; (e) responsivity and detectivity of the device under various optical power. Reproduced with permission from Ref. [
68]. Copyright 2018, Elsevier. (f) Schematic illustration of the fabrication process of the P3PCS PD; (g)
CsPbBr3 nanowire array; (h) schematic of device structure; (i) responsivity and detectivity curves of P3PCS device; (j) long-term photoresponse curves of P3PCS device under
100 mW cm−2 white light at 0 V. Reproduced with permission from Ref. [
69]. Copyright 2019, Wiley-VCH.
Fig. 7. (a) SEM image of
CsPbBr3 microplatelets shows sharp edge and smooth surface morphology. (b) Schematic layout of the perovskite
CsPbBr3 microplatelets PD based on vertical Schottky junction structure; (c)
I-
V characteristics of the
CsPbBr3 microplatelets PD under 405 nm light illumination with different density; (d) normalized
I-
t curves of
CsPbBr3 microplatelets PD with long-term storage without encapsulation. Reproduced with permission from Ref. [
75]. Copyright 2020, Royal Society of Chemistry. (e) Schematic of fabricating process of the
CsPbBr3 microcrystal-based PD; (f) room temperature spectral responsivity curves of the
CsPbBr3 microcrystal-based PD at 0 V bias. Reproduced with permission from Ref. [
76]. Copyright 2019, American Chemical Society. (g) SEM image of
CsPbBr3 microcrystal perovskite film. The inset is a digital photograph of the perovskite film under 365 nm purple flashlight. (h) Schematic illustration of the
CsPbBr3 microcrystal perovskite PD; (i) power-dependent
R and
D*CsPbBr3 microcrystal perovskite PD under 0 V bias. Reproduced with permission from Ref. [
77]. Copyright 2019, American Chemical Society.
Fig. 8. (a) Device structure of the hybrid perovskite PD; (b) LDR of the PD with the device structure
ITO/PEDOT:PSS/CH3NH3PbI3−xClx/PCBM/PFN/Al. The PD has a large LDR of 4100 dB. Reproduced with permission from Ref. [
85]. Copyright 2014, Springer Nature. (c) SEM image of
MAPbI3−xClx thin films on glass substrate; (d) schematic representation of a photodetector device configuration; (e) transient photocurrent properties of device under illumination at 632 nm; (f) long-term photo stability illuminated under
1000 μW/cm2 with different intervals up to 500 h. Reproduced with permission from Ref. [
86]. Copyright 2020, Elsevier. (g) SEM image of PMMA-modified
CsPbBr3 film; (h) schematic and cross-sectional SEM image of the as-fabricated PD with a structure of
ITO/CsPbBr3/PMMA/Ag. Reproduced with permission from Ref. [
87]. Copyright 2020, Royal Society of Chemistry. (i) Schematic structure of PD based on all-inorganic perovskite
CsPbIxBr3−x; (j) current density-voltage (
J-
V) curves of
CsPbIBr2-based PDs under dark and illumination of 450 nm monochrome light with intensity of
1 μm cm−2 to
1 mW cm−2; (k) photoresponsivity evolution of PDs based on inorganic perovskite
CsPbIxBr3−x and hybrid perovskite
MAPbI3 in air ambient condition without encapsulation. Reproduced with permission from Ref. [
88]. Copyright 2018, Wiley-VCH. (l) Schematic illustration of as-fabricated self-powered PD based on
CsxDMA1−xPbI3 perovskite films; (m) responsivity spectrum of the self-powered PD based on the film with
CsI/DMAPbI3 molar ratio of
1:2 in the precursor at 0 V; (n) variation of spectral responsivity with time of the self-powered PD in air (10%–20% RH) at a bias voltage of 0 V under 532 nm illumination. Reproduced with permission from Ref. [
89]. Copyright 2020, Elsevier. (o) Disordered state of ions under dark (upper) and mobile ions accumulated at the opposite interfaces under illumination due to the light-induced self-poling effect (lower), resulting in the built-in electric field; (p) energy band schematics of the MOS structure under dark before contact. Reproduced with permission from Ref. [
90]. Copyright 2019, Royal Society of Chemistry.
Fig. 9. (a) Device structure of self-powered PD with
MAPbI3 as the photosensitive and triboelectric layer; (b) change of
Voc upon repeated illumination that varies in intensity at
100 mW cm−2. Reproduced with permission from Ref. [
93]. Copyright 2015, American Chemical Society. (c) Schematic of a triboelectric-assisted perovskite PD showing charge carrier separation assisted by the triboelectric charges created by the TENG; (d) schematic diagram and the working principle of the (+) triboelectric-assisted perovskite PD; (e) transient photoresponse of the triboelectric-actuated perovskite PD (blue) and perovskite PD without assistance of triboelectricity (red) under alternating on–off laser light (50 mW) illumination with a 3 Hz chopping frequency. Reproduced with permission from Ref. [
94]. Copyright 2019, Elsevier.
Fig. 10. (a) Plane-view SEM image of
CsPbBr3 perovskite thin films
Al2O3-modified FTO substrates; (b) photoresponse curves of
CsPbBr3 perovskite PDs,
Al2O3/CsPbBr3 perovskite PDs, and
Al2O3/CsPbBr3/TiO2 perovskite PDs, respectively; (c) energy band diagram of heterojunctions; (d) current–voltage (
I-
V) curves of PDs under dark and illumination of 405 nm laser with intensity of
6.2 μW cm−2 to
114 mW cm−2; (e) photoresponse curves of ACT PDs under modulated 405 nm laser with various light intensity (0 V); (f) light current and dark current stability at different days for hard substrate device; (g) light current and dark current of flexible device after different bending cycles. Reproduced with permission from Ref. [
123]. Copyright 2019, Wiley-VCH.
Fig. 11. (a) FESEM image of a typical PD with Au/Ag electrode pair; (b)
I-
V curves of the CH
3NH
3PbI
3 MWs array-based PDs with asymmetric contact electrodes (Au/Ag, Au/Al); (c) histogram of
Voc and
Isc for devices with different asymmetric electrode pairs; (d) dark current and photocurrent of the flexible PD being bent to various radii. Reproduced with permission from Ref. [
71]. Copyright 2019, Wiley-VCH. (e) Device structure and (f) cross-sectional SEM image of
MAPbI3:graphene QD based PD. (g) NEP/spectral detectivity of PD. The inset shows excellent flexibility of the PD. (h) Evolution of responsivity during repeated 1000 bending cycles at
λ=600 nm and
d=4 mm. Reproduced with permission from Ref. [
124]. Copyright 2019, American Chemical Society.
Fig. 12. (a) Schematic illustration of ferroelectric polarization-induced formation of internal electric field in the nanowire array device; (b) schematic illustration of the fabrication process of flexible P(VDF-TrFE)/perovskite hybrid nanowire arrays-based PD; (c) 650 nm wavelength light illumination of flexible P(VDF-TrFE)/perovskite PDs with various power intensities at 0 V; (d)
I-
t curves of the poled perovskite-0.6 device under 650 nm light illumination at bending angles with the intersection angle between bending direction and nanowire direction of 0°. Reproduced with permission from Ref. [
125]. Copyright 2019, Wiley-VCH. (e)
I-
t curve of flexible P(VDF-TrFE)/perovskite PDs at different bending cycles. Reproduced with permission from Ref. [
126]. Copyright 2019, Wiley-VCH.
Fig. 13. (a) Schematic diagram of the SFPDs with integrated TENG; (b) change in the measured voltage (
ΔV) and voltage responsivity of the device at different light intensities; (c)
ΔV at various angles of incident light. Reproduced with permission from Ref. [
129]. Copyright 2018, Wiley-VCH. (d) Schematic illustration of the integrated nanosystem, consisting of an energy conversion unit, a light sensing unit, and a current measurement system. (e)
J-
V curves of the as-fabricated integrated perovskite solar cell; (f) photoresponse curves after 100 and 200 bending cycles. Reproduced with permission from Ref. [
130]. Copyright 2016, Wiley-VCH.
Fig. 14. (a) Photoresponsivity evolution of PDs based on inorganic perovskite
CsPbIxBr3−x and hybrid perovskite
MAPbI3 at 100°C in
N2 ambient condition. XRD spectra and digital photographs of (b)
CsPbIBr2 and (c)
MAPbI3 devices before and after heated at 100°C in
N2-filled glove box for 244 h. The obvious
PbI2 peak in XRD spectrum of
MAPbI3 devices after being heated indicates the decomposition of
MAPbI3. Reproduced with permission from Ref. [
88]. Copyright 2018, Wiley-VCH. (d) Thermal stability of
MAPbI3 NCs; photographic image of samples under 365 nm illumination. The samples are annealed at 40°C, 50°C, 60°C, 70°C, and 80°C for 10 min in open air. Reproduced with permission from Ref. [
50]. Copyright 2020, Wiley-VCH.
Material | Diffusion Length (μm) | Lifetime (μs) | Mobility () | Trap Density () | Reference |
---|
thin film | 0.1–1 | 0.01–1 | 1–10 | – | [25] | single crystal | 2–8 | 0.5–1 | 24–105 | | [26] | thin film | | – | 41.3 | – | [27] | single crystal | 5.5 | 25 | 52 | | [28,29] |
|
Table 1. Basic Characteristic Physical Parameters of Perovskite Materials
Device Structure | Physical Mechanism for Self-Mode (Junction) | Response Wavelength (nm) | R (mA W–1) | (Jones) | | Reference |
---|
ZnO NRs-Spiro-MeOTAD | PV (heterojunction) | 470 nm | 6.5 | Not mentioned | 4/10 ms | [95] | | PV (heterojunction) | 450 nm | 11.5 | Not mentioned | 2.3/2.76 s | [57] | | PV (Schottky) | | 240 | Not mentioned | 71/112 μs | [59] | | PV (Schottky) | 405 nm | 11.5 | Not mentioned | 0.409/0.017 s | [96] | | PV (Schottky) | 550 nm | 28 | | 230/60 ms | [28] | | PV (heterojunction) | | 60 | not mentioned | 2149/899 ms | [97] | | PV (p-i-n structure) | 525 nm | 280 | | 20 ns | [90] | | Electric field poling | Visible light | 610 | | 13 ms/14 ms | [98] | | PV (heterojunction) | Visible light | 300 | | | [99] | | PV (heterojunction) | 808 nm | 117.7 | | 70/60 ns | [100] | | PV (heterojunction) | 473 nm | 206 | | 30/39 μs | [80] | | PV (p-i-n structure) | 473 nm | 300 | | 0.4/0.43 ms | [70] | | PV (heterojunction) | 473 nm | 172 | | 0.14/0.12 ms | [79] | PVP- | PV (heterojunction) | 400–700 nm | 100 | | 5.7/6.2 μs | [101] | | Photovoltaic (heterojunction) | 300–950 nm | 250 | | 111/306 μs | [71] | | PV (heterojunction) | 400 nm | 250 | | 110/72 ms | [102] | Carbon- | PV (heterojunction) | White light | 1.3 | | 200/500 ms | [103] | | Light-induced self-poling effect | White light | Not mentioned | | 25.8/0.62 ms | [94] | | PV (heterojunction) | 540 nm | 89.5 | | 100/140 μs | [78] | | PV (heterojunction) | 820 nm | 178.7 | | 73/36 μs | [104] | | PV (heterojunction) | 800 nm | 313 | | 3.5/4 μs | [105] | | PV (heterojunction) | 520 nm | 350 | | 0.58 μs/– | [106] | | PV (heterojunction) | 625 nm | 520 | | 19/21 μs | [107] | | PV (heterojunction) | 532 nm | 380 | | 558 ns/– | [91] | | PV (Schottky) | 808 nm | | | 279/341 ms | [51] | | PV (Schottky) | 450 nm | 110 | | 3.8/4.6 μs | [89] | | PV (heterojunction) | 640 nm | 370 | | 5.02/5.50 μs | [108] | | PV (heterojunction) | 632 nm | | | 0.23/0.38 s | [88] | | PV (heterojunction) | 405 nm | 86 | | 0.3/0.25 s | [109] | | PV (heterojunction) | 720 nm | 473 | | 0.35/0.18 ms | [110] | | PV (Schottky) | 400 nm | 160 | | 150/50 ms | [62] | | PV (Schottky) | 520 nm | 320 | | −/1.21 μs | [111] | | PV (heterojunction) | 405 nm | 350 | | −/1.46 μs | [112] | | PV (heterojunction) | 405 nm | 1.19 | | 600/600 μs | [58] | | PV (Schottky) | 500 nm | 208 | | 75/70 μs | [77] | | TENG | White light | 196 V/(mW cm2) | – | – | [113] | | TENG | UV-visible | 7.5 V/W | | | [95] |
|
Table 2. Summary of Key Parameters of Perovskite-Based SPPDs
Primary Component of the PD Device Structure | Physical Mechanism for Self-Mode (Junction) | R (mA W−1) (Response Wavelength) | (Jones) | | Bending Cycle | Reference |
---|
| Integrated TENG | 418 (sunlight) | | 80/80 ms | 1000 | [132] | | PV (Schottky junction) | 2.2 (300 nm) | | 27.2/26.2 ms | – | [132] | Gr/PEDOT:PSS::GQDs/PCPM/BCP/Al | PV (heterojunction) | 420 (600 nm) | | 0.96 μs/– | 1000 | [127] | MWs/Ag | PV (Schottky junction) | 161.1 (520 nm) | | 13.8/16.1 μs | – | [73] | | PV (heterojunction) | 451 (720 nm) | | | 500 | [133] | | PV (heterojunction) | 440 (405 nm) | | 28/270 μs | 3000 | [126] | -graphene | PV (heterojunction) | 400 (600 nm) | | – | 1000 | [134] | -type GR | PV (heterojunction) | 343 (700 nm) | | 1/1 μs | 1000 | [135] | | PV (heterojunction) | 563 (800 nm) | | | 60 | [136] | | Solar cell | 110 (730 nm) | – | 2200/300 ms | 200 | [133] | Au/P(VDF-rFE) | PV (heterojunction) | 20 (650 nm) | | 92/193 μs | 200 | [129] | Au/P(VDF-TrFE) nanowires/Au | PV (heterojunction) | 12 (650 nm) | | 88/184 μs | 200 | [128] | Au | PV (heterojunction) | 321 (670 nm) | – | 4/3.3 μs | – | [123] | | PV (heterojunction) | 182 (750 nm) | | | 80 | [130] | | PV (Schottky junction) | 227 (532 nm) | | 61/42 ms | 1500 | [72] | | PV (heterojunction) | (405 nm) | | 8.0/2.3 s | 1600 | [136] |
|
Table 3. Summary of Flexible Self-Powered Perovskite-Based PDs