Lycopene‐Based Bionic Membrane for Stable Perovskite Photovoltaics

Dong, Chong; Li, Xiaomei; Ma, Chang; Yang, Wanlin; Cao, Junjie; Igbari, Femi; Wang, Zhao-Kui; Liao, Liang‐Sheng

doi:10.1002/adfm.202011242

Cited by 75 publications

(65 citation statements)

References 39 publications

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“…However, the significant effects of lycopene on the perovskite formations, resistance to O 2 and UV light, and nature investigation of LCP may be ignored with a limited PCE of 21.04%. [ 20 ]…”

Section: Introductionmentioning

confidence: 99%

Learning From Plants: Lycopene Additive Passivation toward Efficient and “Fresh” Perovskite Solar Cells with Oxygen and Ultraviolet Resistance

Zhuang

Zhou

Liu

et al. 2022

Advanced Energy Materials

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serious concern compared with other commercial solar cells. Moreover, experiments show that PSCs degrade quickly on timescales of minutes when exposed to both light and oxygen. In other words, the decomposition is extremely aggravated under both O 2 atmosphere and light illumination, [3] which becomes an urgent and necessary issue to be solved for employing the PSCs in practical conditions. Misra demonstrated that oxygen prefers to adhere to the perovskite surface by Van der Waals force [4] and causes electron transfer from the perovskite surface to oxygen and form super oxides. [5] The perovskite crystal is decomposed when O 2 binds to vacancies and the PbI bond is broken, drastically leading to the degradation of the perovskite film. [6] When the device is illuminated by ultraviolet (UV) illumination in the O 2 atmosphere, the following degradation process will occur [7] : lights supply energy to oxidate I − to form I 0 and the corresponding free electrons from I − combine with O 2 to form radicals O 2 − , which snatch protons from CH 3 NH 3 + . Then, the volatile CH 3 NH 3 from A site organic cation can easily escape from the perovskite crystal structure. The escaped I − and organic cations lead to the vast collapse of the ABX 3 framework and irreversible degradation of PSCs. Therefore, the harsh condition of both UV light illumination and O 2 atmosphere can extremely expedite the rates of the degradation process.On the other hand, tremendous traps are formed during the solution process and prefer to assemble at grain boundaries (GBs) of the perovskite, leading to the formation of serious nonradiative recombination centers [8] and much more vulnerable perovskite films resisting the invasion of H 2 O and oxygen. Additionally, the grain-boundary defects could supply a shortcut to accelerate ion migration of I − , leading to perovskite phase segregation and device hysteresis issues. [9] Moreover, the pinholes on the surface make direct contraction between the hole transport layer (HTL) and the electron transport layer, inducing detrimental leakage currents in the PSCs. Therefore, dealing with the GB traps is also an essential issue to attain both high PCE and stable stability of the target PSCs. Previous works demonstrate small organic additives such as O-donor 1,3,7-trimethylxanthine, Currently, the photovoltaic performance of perovskite solar cells (PSCs) is closely linked to undermined defects in the perovskite, and the correct approach to ensure stability under practical conditions is still in dispute. Therefore, natural, healthy, and low-cost additives are expected to not only reduce the trap sites but also drastically improve stability. In this work, the natural antioxidant additive lycopene extracted from tomatoes is introduced into PSCs. The results indicate that lycopene can passivate the grain boundaries, improve the crystallinity, reduce trap density, and facilitate the α phase formation of perovskite at room temperature. As a result, the power conversion efficiency (PCE) is considerably improved fr...

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Section: Introductionmentioning

confidence: 99%

Learning From Plants: Lycopene Additive Passivation toward Efficient and “Fresh” Perovskite Solar Cells with Oxygen and Ultraviolet Resistance

Zhuang

Zhou

Liu

et al. 2022

Advanced Energy Materials

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“…[ 1 ] Dong et al engineered the interlayers on perovskites to prevent moisture and oxygen erosion, the champion device achieved outdoor efficiency at AM 1.5 G of >21% and the indoor efficiency at 1000 lux reached 40.24%. [ 15 ] He et al introduced 2‐(4‐methoxyphenyl)ethylamine hydrobromide (CH 3 O‐PEABr) passivation on the perovskite to suppress the trap states. The decreased non‐radiative recombination loss produced a high open‐circuit voltage ( V oc ) of 1.00 V, leading to a record efficiency of 40.1% under 301.6 µW cm –2 warm‐white 2700 K LEDs.…”

Section: Introductionmentioning

confidence: 99%

Engineering the Non‐Radiative Recombination of Mixed‐Halide Perovskites with Optimal Bandgap for Indoor Photovoltaics

Lin

2022

Small

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Indoor photovoltaics have attracted increasing attention, since they can provide sustainable energy through the recycling of photon energy from household dim lighting. However, solar cells exhibiting high performance under sunlight may not perform well under indoor light conditions, mainly due to the mismatch of the irradiance spectrum. In particular, most of the indoor light sources emit visible photons with negligible near‐infrared irradiance. According to the detailed balance theory, the optimal bandgap for indoor photovoltaics should be relatively larger, considering the trade‐off between photocurrent and photovoltage losses. In this work, a systematic comparison of the theoretical limits of the conventional and indoor photovoltaics is presented. Then the non‐radiative recombination losses are reduced by a synergetic treatment with Pb(SCN)2 and PEABr, resulting relatively high open circuit voltage of 1.29 V and power conversion efficiency of 17.32% under 1 sun illumination. Furthermore, the devices are fully characterized under weak indoor light (1000 lux, 4000 K LED) achieving a high efficiency of 37.18%, which is promising for real applications.

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“…Figure a presents the steady‐state PL spectra where the modified perovskite film exhibits higher PL intensity than the pristine one, proving less nonradiative recombination and decreased defects. [ 44 ] According to the TRPL spectra of FTO/perovskite samples modified without and with 4‐BC in Figure 4b, the amplitude‐weighted average lifetime ( τ ) increases from 1.20 to 1.41 ns. The longer lifetime reveals that it is more convenient for carriers to transport for a longer distances due to decreased defects, which is in agreement with the t DOS.…”

Section: Resultsmentioning

confidence: 99%

Efficient Surface‐Defect Passivation by Sulfurous‐Acyl‐Included Small Molecule for High‐Performance Perovskite Photovoltaics

et al. 2022

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Perovskite photovoltaics have drawn tremendous attention due to their excellent photoelectric performance and possess promising potential in the field of renewable energy. Although the photoelectric conversion efficiency of perovskite solar cells has made a quantum leap, stability is still a limitation to its long‐term development and has become the main issue that needs to be solved urgently. The defects in the perovskite films and at the grain boundaries are important factors affecting the stability of perovskite photovoltaics. It is reported that the surface defect of the perovskite film is two to four orders of magnitude higher than the bulk defect. Herein, 4‐bromobenzenesulfonyl chloride to modify the surface defects of perovskite films is introduced. Through the interaction between S = O in 4‐bromobenzenesulfonyl chloride and the bare Pb2+ in the perovskite film, the crystal quality of the perovskite film is significantly improved and the surface defects are effectively passivated. The optimized device achieves a champion power conversion efficiency of 21.84%, and the efficiency can retain 92% of the initial value after 1200 h. This finding provides a method to improve the device performance of perovskite solar cells.

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Lycopene‐Based Bionic Membrane for Stable Perovskite Photovoltaics

Cited by 75 publications

References 39 publications

Learning From Plants: Lycopene Additive Passivation toward Efficient and “Fresh” Perovskite Solar Cells with Oxygen and Ultraviolet Resistance

Learning From Plants: Lycopene Additive Passivation toward Efficient and “Fresh” Perovskite Solar Cells with Oxygen and Ultraviolet Resistance

Engineering the Non‐Radiative Recombination of Mixed‐Halide Perovskites with Optimal Bandgap for Indoor Photovoltaics

Efficient Surface‐Defect Passivation by Sulfurous‐Acyl‐Included Small Molecule for High‐Performance Perovskite Photovoltaics

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