Device
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2023
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IF 0
Qiaoyan Ma,Mengen Ma,Liming Liu,Peng Yang,Wujie He,Xing Zhang,Jianzha Zheng,Cuiling Zhang,Chong Liu,Shaohang Wu,Yousheng Wang,Yaohua Mai
The defects presented at three-dimensional wide-band-gap (WBG) perovskites can be passivated by the in situ formed two-dimensional/three-dimensional bulk heterostructures incorporating long-chain alkylamine oleylammonium ligands. As-fabricated WBG perovskite solar minimodules (PSMs) with six subcells connected in series yield record efficiencies of 19.20% and 43.54% with superb high open-circuit voltage ( V oc ) of 7.40 V and 6.49 V (average V oc of 1.233 V and 1.08 V for each subcell) under one-sun and light-emitting diode (1,000 lux and 3,000 K) illumination, respectively. Such results represent an important step in the area of indoor photovoltaics and also further confirm that indoor WBG PSMs have great potential to achieve higher efficiency toward the theoretical limit.
研究领域:
材料科学
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能源工程
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光学
✓ 已验证
DOI
Joule
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2024
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IF 38.6
Wenbo Lu,Mingjie Feng,Zongbao Li,Bin Yan,Shuo Wang,Xin Wen,Xiaoyan An,Shunchang Liu,Jin-Song Hu,Ding-Jiang Xue
As the world’s first solid-state solar cells, selenium (Se) cells initiated contemporary photovoltaic research. However, the highest efficiency of Se photovoltaics has stagnated at 6.5% since 2017. Here, we report Se solar cells with a certified record efficiency of 7.2% through a critical melting-annealing strategy. This strategy provides enough energy to overcome the high activation energy of disordered Se chains and incorporate them into the lattice, arising from the unique one-dimensional crystal structure of photoactive trigonal Se. The resulting Se films exhibit a 2.3-fold reduction in trap density compared with conventional Se films. Such high-performance Se cells also achieve an efficiency of 18.0% under 1,000-lux indoor illumination, owing to their suitable wide band gap (∼1.9 eV) for indoor photovoltaics (IPVs). This efficiency surpasses those of market-dominant amorphous silicon and all currently available lead-free perovskite IPVs. We further construct Se IPV modules capable of generating a power of 559.8 μW, achieving self-powered wireless electronic shelf labels.
研究领域:
材料科学
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光伏技术
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能源转换
✓ 已验证
产品关联
DOI
高影响因子
Light-Science & Applications
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2024
·Vol. 13
·期 1
·1-15
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IF 20.6
Chen Xiao,Shu Xiaoxuan,Zhou Jiacheng,Wan Lei,Xiao Peng,Fu Yuchen,Ye Junzhi,Huang Yi-Teng,Yan Bin,Xue Dingjiang,Chen Tao,Chen Jiejie,Hoye Robert L. Z.,Zhou Ru
Indoor photovoltaics (IPVs) have attracted increasing attention for sustainably powering Internet of Things (IoT) electronics. Sb 2 S 3 is a promising IPV candidate material with a bandgap of ~1.75 eV, which is near the optimal value for indoor energy harvesting. However, the performance of Sb 2 S 3 solar cells is limited by nonradiative recombination, which is dependent on the quality of the absorber films. Additive engineering is an effective strategy to fine tune the properties of solution-processed films. This work shows that the addition of monoethanolamine (MEA) into the precursor solution allows the nucleation and growth of Sb 2 S 3 films to be controlled, enabling the deposition of high-quality Sb 2 S 3 absorbers with reduced grain boundary density, optimized band positions, and increased carrier concentration. Complemented with computations, it is revealed that the incorporation of MEA leads to a more efficient and energetically favorable deposition for enhanced heterogeneous nucleation on the substrate, which increases the grain size and accelerates the deposition rate of Sb 2 S 3 films. Due to suppressed carrier recombination and improved charge-carrier transport in Sb 2 S 3 absorber films, the MEA-modulated Sb 2 S 3 solar cell yields a power conversion efficiency (PCE) of 7.22% under AM1.5 G illumination, and an IPV PCE of 17.55% under 1000 lux white light emitting diode (WLED) illumination, which is the highest yet reported for Sb 2 S 3 IPVs. Furthermore, we construct high performance large-area Sb 2 S 3 IPV minimodules to power IoT wireless sensors, and realize the long-term continuous recording of environmental parameters under WLED illumination in an office. This work highlights the great prospect of Sb 2 S 3 photovoltaics for indoor energy harvesting.
研究领域:
材料科学
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光伏技术
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能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
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2022
·Vol. 9
·期 33
·2204138
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IF 17.521
Cuiling Zhang,Chong Liu,Yanyan Gao,Shusheng Zhu,Fang Chen,Boyuan Huang,Yi Xie,Yaqing Liu,Mengen Ma,Zhen Wang,Shaohang Wu,Ruud E. I. Schropp,Yaohua Mai
Indoor photovoltaics (IPVs) are expected to power the Internet of Things ecosystem, which is attracting ever-increasing attention as part of the rapidly developing distributed communications and electronics technology. The power conversion efficiency of IPVs strongly depends on the match between typical indoor light spectra and the band gap of the light absorbing layer. Therefore, band-gap tunable materials, such as metal-halide perovskites, are specifically promising candidates for approaching the indoor illumination efficiency limit of ∼56%. However, perovskite materials with ideal band gap for indoor application generally contain high bromine (Br) contents, causing inferior open-circuit voltage ( V OC ). By fabricating a series of wide-bandgap perovskites (Cs 0.17 FA 0.83 PbI 3− x Br x , 0.6 ≤ x ≤ 1.6) with varying Br contents and related band gaps, it is found that, the high Br vacancy (V Br ) defect density is a significant reason that leading to large V OC deficits apart from the well-accepted halide segregation. The introduction of I-rich alkali metal small-molecule compounds is demonstrated to suppress the V Br and increase the V OC of perovskite IPVs up to 1.05 V under 1000 lux light-emitting diode illumination, one of the highest V OC values reported so far. More importantly, the modules are sent for independent certification and have gained a record efficiency of 36.36%.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Mengen Ma,Yilin Zeng,Yuzhao Yang,Cuiling Zhang,Yujiao Ma,Shaohang Wu,Chong Liu,Yaohua Mai
The wide-band-gap inorganic CsPbI2Br perovskite material provides a highly matched absorption range with the indoor light spectrum and is expected to be used in the fabrication of highly efficient indoor photovoltaic cells (IPVs) and self-powered low-power Internet of Things (IoT) sensors. However, the defects that cause nonradiative recombination and ion migration are assumed to form leakage loss channels, resulting in a severe impact on the open-circuit voltage (VOC) and the fill factor (FF) of IPVs. Herein, we introduce poly(amidoamine) (PAMAM) dendrimers with multiple passivation sites to fully repair the leakage channels in the devices, taking into account the characteristics of IPVs that are extremely sensitive to nonradiative recombination and shunt resistance. The as-optimized IPVs demonstrate a promising PCE of 35.71% under a fluorescent light source (1000 lux), with VOC increased from 0.99 to 1.06 V and FF improved from 75.21 to 84.39%. The present work provides insight into the photovoltaic mechanism of perovskites under full sun and indoor light, which provides guidance for perovskite photovoltaic technology with industrialization prospects.
研究领域:
材料科学
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能源技术
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光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhuoneng Bi,Xueqing Xu,Xia Chen,Yanqing Zhu,Chang Liu,Hua Yu,Yupeng Zheng,Pavel A. Troshin,Antonio Guerrero,Gang Xu
Emerging hybrid organic–inorganic perovskites with superior optoelectronic property demonstrate promising prospect for photovoltaic (PV) applications, in particular for low-lighting indoor applications e.g. within internet of things (IoT) networks or low-energy wireless communication devices. In order to prepare devices with high power output under low-illumination conditions, scalable fabrication techniques are preferred for large-area perovskite solar cells. In additions, one of the key parameters to achieve high-efficiency large-area perovskite solar cells is to minimize the ohmic loss to further boost the solar cell efficiency. Herein, a one-step blade-coating method assisted by hexafluorobenzene (HFB) was developed to deposit dense, large-area smooth and high-quality perovskite films with low ohmic loss. The as-fabricated devices demonstrated power conversion efficiency (PCE) of 20.7% (area of 0.2 cm 2 ) and 16.5% (1 cm 2 ), respectively, under standard (AM 1.5G) illumination conditions. Besides, the large-area (1 cm 2 ) devices demonstrated a remarkable PCE of ∼ 33.8% and ∼ 30.0% under 1000 lx and 100 lx illumination provided by white light-emitting diode (LED) lamp, respectively. We exhibited a series-connected stack of large-area (totally active area ∼ 4 cm 2 ) perovskite photovoltaic device powering up a LED under common indoor environment as an indoor self-power indicator lamp. The analysis using a single diode model suggests that the high performance of the large-area devices under low-lighting indoor conditions is highly associated with the largely reduced ohmic losses, which particularly indicate that the perovskite films by a facile and scalable blade-coating method. The presented scalable approach paves the way to designing high-performance perovskite solar cells for a variety of emerging indoor PV applications.
研究领域:
材料科学
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能源技术
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光伏器件
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）