Tunable engineering of photo- and electro-induced carrier dynamics in perovskite photoelectronic devices

Zhang, Feng; Zhou, Mi; Hao, Weizhong; Chen, Hualong; Zhang, Yule; Zhao, Jinjin; Cao, Guozhong; Zhang, Han

doi:10.1007/s40843-021-1906-5

Cited by 11 publications

(12 citation statements)

References 221 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The V bi of the target was enhanced from 1.11 to 1.16 V, indicating more efficient charge separation and Angewandte Chemie carrier transport. [18,68] Dark-state I-V tests were typically performed to evaluate the charge accumulation and extraction capabilities at interfaces in devices. The target device exhibited a lower dark current and a greater extraction slope under forward bias than the control device (Figure 3f), further indicating more efficient charge extraction and less charge accumulation after doping.…”

Section: Electrical Properties Of Flexible Perovskite Filmmentioning

confidence: 99%

Interfacial Engineering for Efficient Low‐Temperature Flexible Perovskite Solar Cells

Cai,

Yang,

Liu

et al. 2023

Angew Chem Int Ed

View full text Add to dashboard Cite

Photovoltaic technology with low weight, high specific power in cold environments, and compatibility with flexible fabrication is highly desired for near‐space vehicles and polar region applications. Herein, we demonstrate efficient low‐temperature flexible perovskite solar cells by improving the interfacial contact between electron‐transport layer (ETL) and perovskite layer. We find that the adsorbed oxygen active sites and oxygen vacancies of flexible tin oxide (SnO2) ETL layer can be effectively decreased by incorporating a trace amount of titanium tetrachloride (TiCl4). The effective defects elimination at the interfacial increases the electron mobility of flexible SnO2 layer, regulates band alignment at the perovskite/SnO2 interface, induces larger perovskite crystal growth, and improves charge collection efficiency in a complete solar cell. Correspondingly, the improved interfacial contact transforms into high‐performance solar cells under one‐sun illumination (AM 1.5G) with efficiencies up to 23.7% at 218 K, which might open up a new era of application of this emerging flexible photovoltaic technology to low‐temperature environments such as near‐space and polar regions.

show abstract

Section: Electrical Properties Of Flexible Perovskite Filmmentioning

confidence: 99%

Interfacial Engineering for Efficient Low‐Temperature Flexible Perovskite Solar Cells

Cai,

Yang,

Liu

et al. 2023

Angew Chem Int Ed

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4] In particular, metal halide perovskites (MHPs) exhibit excellent electro-optical, photoelectrical, and all-optical conversion characteristics. [5] All-optical conversion means the high-energy photons can be converted to low-energy photons with the frequency change. They can be potentially used in solar cells, [6][7][8][9][10][11] lightemitting diodes (LEDs), [12,13] X-ray detection applications, [14] Review Structural Symmetry Impressing Carrier Dynamics of Halide Perovskite biomedical applications, [15] and piezoelectric and pyroelectric devices [16] owing to their large light absorption coefficients, [17] tunable bandgaps, [18,19] long carrier transport distances, [20,21] and high carrier mobilities.…”

Section: Introductionmentioning

confidence: 99%

Structural Symmetry Impressing Carrier Dynamics of Halide Perovskite

Guo

Yi²,

Yang

et al. 2023

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Metal halide perovskites (MHPs) have been one of the most promising materials for the photoelectric, electro-optical, and all-optical conversion devices, thanks to their excellent energy conversion. To investigate the energy conversion induced by structural symmetry, herein, the carrier dynamics and dielectric properties in MHPs are surveyed and reviewed as the microscopic and macroscopic bridge, respectively. The intrinsic correlations between the structural symmetry broken, carrier dynamics, and energy conversion performance are systematically analyzed by considering the energy band structures and dielectric constants. The internal energy conversion mechanisms are elucidated to pave the way for the perovskite advanced applications.

show abstract

“…In recent years, a large number of non-linear optical (NLO) materials have been investigated for their potential use in photoelectronic devices (Zhang et al, 2022), optical information processing (Wu et al, 2020) and optical communication (SOROKINA et al, 2016). In particular, large attention has been paid to the development of simple and accurate measurement techniques, with emphasis on measurement sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity optical non-linear measurement based on wide-band phase objects

Shao

Yang²,

Yang³

et al. 2023

Front. Mater.

View full text Add to dashboard Cite

On the basic that the phase object (PO) is the key optical device in the 4f imaging system, a modified high sensitivity optical nonlinear measurement technique with an absorptive homemade phase object (HPO) is reported in order to characterize the value of weak nonlinear refraction material. The absorptive HPO used in this technique is two transparent glass plates on which a liquid film between two pieces of transparent glasses is deposited and added a rotating object at the below HPO to modulate the phase of a PO. The measuring sensitivity can be improved by changing the transmittance of the absorptive HPO. Meanwhile, because the phase retardation of HPO can be continuously adjustable by modulate the rotating object, it makes the sensitivity of measurement at different wavelengths of laser optimal. Results show that the measuring sensitivity is improved 2-4 times compare with the conventional 4f imaging technique. Furthermore, the modified technique can be used to measure the spectrum of nonlinear refraction coefficients of materials at the continuous wavelength. This method further expands the 4f phase coherent imaging measurement technology, not only solves the deficiencies of the conventional phase object, but also improves the accuracy of the measurement. Experiment and theoretical analysis results are presented to validate our technique.

show abstract

Tunable engineering of photo- and electro-induced carrier dynamics in perovskite photoelectronic devices

Cited by 11 publications

References 221 publications

Interfacial Engineering for Efficient Low‐Temperature Flexible Perovskite Solar Cells

Interfacial Engineering for Efficient Low‐Temperature Flexible Perovskite Solar Cells

Structural Symmetry Impressing Carrier Dynamics of Halide Perovskite

Sensitivity optical non-linear measurement based on wide-band phase objects

Contact Info

Product

Resources

About