Numerical study of mono-crystalline silicon solar cells with passivated emitter and rear contact configuration for the efficiency beyond 24% based on mass production technology

Wang, Peng; Li, Gaofei; Wang, Miao; Lei, Hong; Zheng, Jing Hui; Yang, Lei; Chen, Yigang; Li, Dongdong; Lu, Linfeng

doi:10.1088/1674-4926/41/6/062701

Cited by 11 publications

(8 citation statements)

References 41 publications

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“…The proficient charge extraction usually suppresses bimolecular recombination and contributes to the improvement of photovoltaic performance. [ 53–55 ]…”

Section: Resultsmentioning

confidence: 99%

“…The proficient charge extraction usually suppresses bimolecular recombination and contributes to the improvement of photovoltaic performance. [53][54][55] To evaluate the charge recombination aforementioned, transient photovoltage (TPV) spectra were implemented. As depicted in Figure 5d, PF2:m-ITIC devices present a prolonged lifetime of ≈1.77 μs compared to PT-E:m-ITIC devices (0.84 μs) and PF1:m-ITIC devices (1.12 μs), implying the charge recombination rate is significantly reduced in the former sample.…”

Section: Charge Dynamicsmentioning

confidence: 99%

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Efficient Organic Solar Cells Enabled by Simple Non‐Fused Electron Donors with Low Synthetic Complexity

Gao

Cui

et al. 2021

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Nowadays, the state-of-the-art photovoltaic performance of OSCs based on fused-ring polymers can indeed rival those of polycrystalline silicon solar cells. [5][6][7][8][9][10] However, fused-ring polymers always present large synthetic complexity (SC > 30%) due to their tedious synthetic procedures and complicated post-purification, which inevitably results in high cost (>1000 $ g −1 ) and leads to that they can seldom be prepared in a high quantity (>10 g). The high cost, as well as poor scalability, greatly hamper the applications of fused-ring polymers in OSCs commercialization. [11][12][13][14] Therefore, developing poly mers with low SC but still featuring good photovoltaic performance is urgent and significant for the further development of OSCs.Compared to fused-ring polymers, poly(3-hexylthiophene) (P3HT) should be the admittedly simplest polymer applying in OSCs, which is not only ascribed to its simple molecular structure but also attributed to its facile synthesis. [15][16][17] Yet, most P3HT-based OSCs show inferior efficiency with value of less than 10%, which is partially ascribed to the shallow highest occupied molecular orbital energy (E HOMO ) level of P3HT. [18][19][20] During the past decades, introducing electron-withdrawing groups or conjugated Fused-ring electron donors boost the efficiency of organic solar cells (OSCs), but they suffer from high cost and low yield for their large synthetic complexity (SC > 30%). Herein, the authors develop a series of simple non-fused-ring electron donors, PF1 and PF2, which alternately consist of furan-3-carboxylate and 2,2′-bithiophene. Note that PF1 and PF2 present very small SC of 9.7% for their inexpensive raw materials, facile synthesis, and high synthetic yield. Compared to their all-thiophene-backbone counterpart PT-E, two new polymers feature larger conjugated plane, resulting in higher hole mobility for them, especially a value up to ≈10 −4 cm 2 V −1 •s for PF2 with longer alkyl side chain. Meanwhile, PF1 and PF2 exhibit larger dielectric constant and deeper electronic energy level versus PT-E. Benefiting from the better physicochemical properties, the efficiencies of PF1-and PF2-based devices are improved by ≈16.7% and ≈71.3% relative to that PT-E-based devices, respectively. Furthermore, the optimized PF2-based devices with introducing PC 71 BM as the third component deliver a higher efficiency of 12.40%. The work not only indicates that furan-3-carboxylate is a simple yet efficient building block for constructing non-fused-ring polymers but also provides a promising electron donor PF2 for the low-cost production of OSCs.

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“…The proficient charge extraction usually suppresses bimolecular recombination and contributes to the improvement of photovoltaic performance. [ 53–55 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Charge Dynamicsmentioning

confidence: 99%

Efficient Organic Solar Cells Enabled by Simple Non‐Fused Electron Donors with Low Synthetic Complexity

Gao

Cui

et al. 2021

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“…This is the passivating emitter and rear cell (PERC) solar cell architecture, which has become the mainstream technology in photovoltaic manufacturing in recent years. The performance of PERC cells has grown rapidly with record efficiencies in excess of 24% reported in research and development, [ 2 ] while values in the range of 22–23% have been demonstrated in mass production. [ 3 ] Recent research showed that the highest energy conversion efficiency ( η ) potential of PERC (≈24.5%) is limited by recombination in the p‐type c‐Si base and the phosphorus‐doped front emitter.…”

Section: Introductionmentioning

confidence: 99%

Poly‐SiO_x Passivating Contacts with Plasma‐Assisted N₂O Oxidation of Silicon (PANO‐SiO_x)

et al. 2023

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Passivating contacts are crucial for realizing high‐performance crystalline silicon solar cells. Herein, contact formation by plasma‐enhanced chemical vapor deposition (PECVD) followed by an annealing step is focused on. Poly‐SiOx passivating contacts by combining plasma‐assisted N2O‐based oxidation of silicon (PANO‐SiOx) with a thin film of phosphorus (n+) or boron (p+)‐doped hydrogenated amorphous silicon oxide (a‐SiOx:H) are manufactured. Postannealing is conducted for transitioning a‐SiOx:H into poly‐SiOx. The aim is to achieve a contact with low absorption and high‐quality passivation. It is demonstrated that by tuning the plasma oxidation process time and power, the PANO‐SiOx thickness and its passivation quality can be controlled. A higher SiO2 content is observed in PANO‐SiOx than in the nitric acid oxidation of silicon (NAOS‐SiOx) counterpart. PANO‐SiOx acts as a stronger diffusion barrier for both boron and phosphorus atoms compared to NAOS‐SiOx, affecting the dopant distribution during annealing. Implied open‐circuit voltages up to 751 and 710 mV for n+ and p+ flat symmetric samples, respectively, are demonstrated. With respect to standard thermally grown SiO2 tunneling oxide combined with (in/ex )situ‐doped low‐pressure chemical vapor deposition poly‐Si, this study presents a simple alternative for manufacturing passivating contact fully based on PECVD processes.

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“…Organic–inorganic halide perovskite photovoltaic technologies have demonstrated an unprecedented progress in less than a decade with power conversion efficiency (PCE) of 25.5%, approaching the record of monocrystalline silicon devices . Interests have arisen in the commercialization as well as the extension of the perovskite photovoltaic technologies for a new scope of green energy utilization and storage .…”

mentioning

confidence: 99%

“…O rganic−inorganic halide perovskite photovoltaic technologies have demonstrated an unprecedented progress in less than a decade 1 with power conversion efficiency (PCE) of 25.5%, approaching the record of monocrystalline silicon devices. 2 Interests have arisen in the commercialization as well as the extension of the perovskite photovoltaic technologies for a new scope of green energy utilization and storage. 3 For example, the proposed concept of using perovskite solar cells (PSCs) to drive water splitting reactions for oxygen or hydrogen generation has opened up a new route toward efficient solar energy conversion into fuels that are easier for storage.…”

mentioning

confidence: 99%

Robust Unencapsulated Perovskite Solar Cells Protected by a Fluorinated Fullerene Electron Transporting Layer

et al. 2021

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The emergent perovskite photovoltaics technology faces challenges like the long-term durability combining moisture, thermal, and photo stresses that prevents them from competing with established technologies. Here, we introduce a series of new fluorinated fullerenes as an electron-transporting layer (ETL) for robust perovskite photovoltaics that deliver a high power conversion efficiency of 21.27% with substantially improved durability against environmental stressing. The hydrophobic nature of the new fullerene protects the unencapsulated perovskite cell with stability over 1400 h in 85% relative humidity. Notably, the unencapsulated device maintained 80% of their original performance (T80) after being immersed in water for over 10 min. Detailed characterizations suggest that the fluorinated fullerene can immobilize the cations in perovskites and passivate the surface traps. Therefore, the T80 lifetime of the devices under constant illumination reached 1920 h. On the basis of the accelerated test, we estimate a lifetime approaching 10 years with encapsulation. The successful demonstration of the new ETL can stimulate further research and momentum for future photovoltaic technology development.

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Numerical study of mono-crystalline silicon solar cells with passivated emitter and rear contact configuration for the efficiency beyond 24% based on mass production technology

Cited by 11 publications

References 41 publications

Efficient Organic Solar Cells Enabled by Simple Non‐Fused Electron Donors with Low Synthetic Complexity

Efficient Organic Solar Cells Enabled by Simple Non‐Fused Electron Donors with Low Synthetic Complexity

Poly‐SiO_x Passivating Contacts with Plasma‐Assisted N₂O Oxidation of Silicon (PANO‐SiO_x)

Robust Unencapsulated Perovskite Solar Cells Protected by a Fluorinated Fullerene Electron Transporting Layer

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Numerical study of mono-crystalline silicon solar cells with passivated emitter and rear contact configuration for the efficiency beyond 24% based on mass production technology

Cited by 11 publications

References 41 publications

Efficient Organic Solar Cells Enabled by Simple Non‐Fused Electron Donors with Low Synthetic Complexity

Efficient Organic Solar Cells Enabled by Simple Non‐Fused Electron Donors with Low Synthetic Complexity

Poly‐SiOx Passivating Contacts with Plasma‐Assisted N2O Oxidation of Silicon (PANO‐SiOx)

Robust Unencapsulated Perovskite Solar Cells Protected by a Fluorinated Fullerene Electron Transporting Layer

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Poly‐SiO_x Passivating Contacts with Plasma‐Assisted N₂O Oxidation of Silicon (PANO‐SiO_x)