Piezo-phototronic effect in highly stable CsPbI3-PVDF composite for self-powered nanogenerator and photodetector

Maity, Kuntal; Pal, Uttam; Mishra, Hari Krishna; Maji, Prasenjit; Sadhukhan, Priyabrata; Mallick, Zinnia; Das, Sachindranath; Mondal, Bidya; Mandal, Dipankar

doi:10.1016/j.nanoen.2021.106743

Cited by 62 publications

(51 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the above observation, it can be concluded that CsPbBr 3 @PVDF-HFP fibers can be effectively used for high-performance optoelectronic as well as photovoltaic applications. 52…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, we found that the 1S excitonic position of the CsPbBr3@PVDF-HFP fiber continuously shifted toward lower energy upon decreasing the temperatures from 300 to 5 K (514 to 518 nm), due to the decrement in band gap. 36,37,[46][47][48][49][50][51][52] It is clear that the CsPbBr3@PVDF-HFP fiber synthesized from insitu electrospinning method results in the formation of surface trap states stemming from Br vacancies. 39 From TA studies through the vast ranges of temperature, it has clearly been observed that CsPbBr3@PVDF-HFP fiber are prone to form defects owing to the larger size.…”

Section: Low Temperature Transient Absorption Studymentioning

confidence: 99%

See 1 more Smart Citation

In situ CsPbBr₃ architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

Babu¹,

Kaur²,

Shukla³

et al. 2022

Mater. Adv.

View full text Add to dashboard Cite

show abstract

“…From the above observation, it can be concluded that CsPbBr 3 @PVDF-HFP fibers can be effectively used for high-performance optoelectronic as well as photovoltaic applications. 52…”

Section: Resultsmentioning

confidence: 99%

Section: Low Temperature Transient Absorption Studymentioning

confidence: 99%

In situ CsPbBr₃ architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

Babu¹,

Kaur²,

Shukla³

et al. 2022

Mater. Adv.

View full text Add to dashboard Cite

show abstract

“…In this scenario, developing compatible materials toward self-powered optoelectronics is extremely desirable. Consequently, investigating the piezo-phototronic effect in metal halide perovskites with strong stability and acceptable band gaps and stability for implementation in self-powered PD and PNG is of significant interest. , …”

Section: Introductionmentioning

confidence: 99%

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Mondal¹,

Mishra²,

Sengupta³

et al. 2022

Langmuir

Self Cite

View full text Add to dashboard Cite

In recent years, lead-free perovskite materials are exponentially emerging in photovoltaic and optoelectronic applications due to their low toxicity and superior optical properties. On the other hand, the demand for flexible, wearable, and lightweight optoelectronic devices is significantly growing in sensor and actuator technologies. In this scenario, lead-free perovskite-based flexible piezoelectric polymer composites have sparked considerable attention in this field due to their excellent piezo-, pyro-, ferroelectric, and photovoltaic properties. Thus, in this work, a long-term stable lead-free Cs 3 Bi 2 I 9 -PVDF composite is introduced. The in situ growth of the Cs 3 Bi 2 I 9 perovskite induces 92% yield of the electroactive phase in the PVDF matrix. The possible mechanism behind the electroactive β-phase transformation is presented via interfacial interactions of PVDF moieties with the Cs 3 Bi 2 I 9 (CBI) perovskite, which also give rise to long-term environmental stability. Next, a piezoelectric nanogenerator (PNG) has been fabricated with the Cs 3 Bi 2 I 9 -PVDF composite for mechanical energy harvesting, biophysiological motion monitoring, and voice recognitions that have potential utility in the health-care sector. Furthermore, a photodetector is developed to realize the piezophototronic effect. It exhibits a fast photoswitching behavior with rise and decay times of 141 and 278 ms, respectively. Thus, it is confirmed that the flexible Cs 3 Bi 2 I 9 -PVDF composite has shown tremendous potential to be used as an optical signal-modulated piezo-responsive wearable sensor.

show abstract

“…While we were preparing the revised manuscript, we noticed a new publication of a yellow δ-phase CsPbI 3 /PVDF-based nanogenerator. 35 Based on their first-principles density functional theory (DFT) calculations, it is found that the interaction between CsPbI 3 and PVDF, through the bonding of the F of PVDF with the Cs and Pb within CsPbI 3 , could enhance the polarization and decrease the band gap of CsPbI 3 . Although the authors did not observe the transformation of the yellow-phase CsPbI 3 to the black phase through the interaction between PVDF and CsPbI 3 , this still serves as a strong support for our experimental observation that bondings are formed between PVDF and the CsPbI 3 perovskite.…”

Section: Resultsmentioning

confidence: 99%

Poly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI₃ Perovskite for High-Performance Piezoelectric Nanogenerators

et al. 2022

View full text Add to dashboard Cite

Halide perovskite materials have been recently recognized as promising materials for piezoelectric nanogenerators (PENGs) due to their potentially strong ferroelectricity and piezoelectricity. Here, we report a new method using a poly(vinylidene fluoride) (PVDF) polymer to achieve excellent long-term stable black γ-phase CsPbI 3 and explore the piezoelectric performance on a CsPbI 3 @PVDF composite film. The PVDF-stabilized black-phase CsPbI 3 perovskite composite film can be stable under ambient conditions for more than 60 days and over 24 h while heated at 80 °C. Piezoresponse force spectroscopy measurements revealed that the black CsPbI 3 /PVDF composite contains well-developed ferroelectric properties with a high piezoelectric charge coefficient ( d 33 ) of 28.4 pm/V. The black phase of the CsPbI 3 -based PVDF composite exhibited 2 times higher performance than the yellow phase of the CsPbI 3 -based composite. A layer-by-layer stacking method was adopted to tune the thickness of the composite film. A five-layer black-phase CsPbI 3 @PVDF composite PENG exhibited a voltage output of 26 V and a current density of 1.1 μA/cm 2 . The output power can reach a peak value of 25 μW. Moreover, the PENG can be utilized to charge capacitors through a bridge rectifier and display good durability without degradation for over 14 000 cyclic tests. These results reveal the feasibility of the all-inorganic perovskite for the design and development of high-performance piezoelectric nanogenerators.

show abstract

Piezo-phototronic effect in highly stable CsPbI3-PVDF composite for self-powered nanogenerator and photodetector

Cited by 62 publications

References 47 publications

In situ CsPbBr₃ architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

In situ CsPbBr₃ architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Poly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI₃ Perovskite for High-Performance Piezoelectric Nanogenerators

Contact Info

Product

Resources

About

Piezo-phototronic effect in highly stable CsPbI3-PVDF composite for self-powered nanogenerator and photodetector

Cited by 62 publications

References 47 publications

In situ CsPbBr3 architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

In situ CsPbBr3 architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

Lead-Free Perovskite Cs3Bi2I9-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Poly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI3 Perovskite for High-Performance Piezoelectric Nanogenerators

Contact Info

Product

Resources

About

In situ CsPbBr₃ architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

In situ CsPbBr₃ architecture engineered in electrospun fibers and its ultrafast charge-transfer dynamics

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Poly(vinylidene fluoride)-Stabilized Black γ-Phase CsPbI₃ Perovskite for High-Performance Piezoelectric Nanogenerators