Conjugated linker-boosted self-assembled monolayer molecule for inverted perovskite solar cells

Joule, Journal Year: 2024, Volume and Issue: 8(7), P. 2123 - 2134

Published: May 30, 2024

Language: Английский

---

Strategies for Improving Efficiency and Stability of Inverted Perovskite Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: March 1, 2024

Abstract Perovskite solar cells (PSCs) have attracted widespread research and commercialization attention because of their high power conversion efficiency (PCE) low fabrication cost. The long‐term stability PSCs should satisfy industrial requirements for photovoltaic devices. Inverted with a p‐i‐n architecture exhibit considerable advantages excellent competitive efficiency. continuously broken‐through PCE inverted shows huge application potential. This review summarizes the developments outlines characteristics including charge transport layers (CTLs), perovskite compositions, interfacial regulation strategies. latest effective CTLs, modification, promotion strategies especially under light, thermal, bias conditions are emphatically analyzed. Furthermore, applications structure in high‐efficiency stable tandem, flexible devices, modules main obstacles systematically introduced. Finally, remaining challenges faced by devices discussed, several directions advancing proposed according to development status industrialization requirements.

Language: Английский

---

Bisphosphonate‐Anchored Self‐Assembled Molecules with Larger Dipole Moments for Efficient Inverted Perovskite Solar Cells with Excellent Stability

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)

Published: May 20, 2024

Abstract In the fabrication of inverted perovskite solar cells (PSCs), wettability, adsorbability, and compactness self‐assembled monolayers (SAMs) on conductive substrates have critical impacts quality films defects at buried perovskite‐substrate interface, which control efficiency stability devices. Herein, three bisphosphonate‐anchored indolocarbazole (IDCz)‐derived SAMs, IDCz‐1, IDCz‐2, IDCz‐3, are designed synthesized by modulating position two nitrogen atoms IDCz unit to improve molecular dipole moments strengthen π–π interactions. Regulating work functions (WF) FTO electrodes through energy levels, band bends upwards with a small offset for ITO/IDCz‐3/perovskite, thereby promoting hole extraction blocking electrons. As result, PSC employing IDCz‐3 as hole‐collecting layer exhibits champion PCE 25.15%, is record multipodal SAMs‐based PSCs. Moreover, unencapsulated device can be stored least 1800 h little degradation in performance.

Language: Английский

---

Dipole Moments Regulation of Biphosphonic Acid Molecules for Self-assembled Monolayers Boosts the Efficiency of Organic Solar Cells Exceeding 19.7%

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(20), P. 14287 - 14296

Published: May 8, 2024

PEDOT:PSS has been widely used as a hole extraction layer (HEL) in organic solar cells (OSCs). However, their acidic nature can potentially corrode the indium tin oxide (ITO) electrode over time, leading to adverse effects on longevity of OSCs. Herein, we have developed class biphosphonic acid molecules with tunable dipole moments for self-assembled monolayers (SAMs), namely, 3-BPIC(i), 3-BPIC, and 3-BPIC-F, which exhibit an increasing moment sequence. Compared centrosymmetric axisymmetric 3-BPIC 3-BPIC-F higher adsorption energies (Eads) ITO, shorter interface spacing, more uniform coverage ITO surface, better interfacial compatibility active layer. Thanks incorporation fluorine atoms, exhibits deeper highest occupied molecular orbital (HOMO) energy level larger compared resulting enlarged work function (WF) ITO/3-BPIC-F substrate. These advantages could not only improve within device but also lower impedance reduce nonradiative recombination at interface. As result, OSCs using SAM based obtained record high efficiency 19.71%, is than that achieved from 3-BPIC(i) (13.54%) (19.34%). Importantly, 3-BPIC-F-based significantly enhanced stability utilizing HEL. Our offers guidance future design functional SAMs realize even performance cells.

Language: Английский

---

Self‐Assembled Monolayer Hole‐Selective Contact for Up‐Scalable and Cost‐Effective Inverted Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: April 8, 2024

Abstract Inverted positive‐intrinsic‐negative ( p ‐i‐ n ) perovskite solar cells (IPSCs) have attracted widespread attention due to their low fabrication temperature, good stability in ambient air, and the potential for use flexible tandem devices. In recent years, self‐assembled monolayers (SAMs) been investigated as a promising hole‐selective contact IPSCs, leading an impressive record efficiency of about 26%, which is comparable that regular counterparts. This review focuses on progress SAM‐based IPSCs from perspective energy level matching, defect passivation, interface carrier extraction, SAMs’ improvement, well advances up‐scalable SAMs layers efficient modules A cost analysis other commonly used materials conducted evaluate cost‐effectiveness photovoltaic applications. Finally, future challenges are pointed out perspectives how up‐scale improve long‐term operational provided.

Language: Английский

---

Recent Advances in Carbazole‐Based Self‐Assembled Monolayer for Solution‐Processed Optoelectronic Devices

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 21, 2024

Abstract Self‐assembled molecules (SAMs) have shown great potential in the application of optoelectronic devices due to their unique molecular properties. Recently, emerging phosphonic acid‐based SAMs, 2‐(9Hcarbazol‐9‐yl)ethyl]phosphonic acid (2PACz), successfully applied perovskite solar cells (PSCs), organic (OSCs) and light emitting diodes (PeLEDs). More importantly, impressive results based on 2PACz SAMs are reported recently succession. Therefore, it is essential provide an insightful summary promote further development. In this review, molecule design strategies about first concluded. Subsequently, work systematically reviews recent advances its derivatives for single junction PSCs, tandem OSCs PeLEDs. Finally, concludes discusses future challenges develop devices.

Language: Английский

---

Pros and cons of hole-selective self-assembled monolayers in inverted PSCs and TSCs: extensive case studies and data analysis

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(17), P. 6157 - 6203

Published: Jan. 1, 2024

HSSAMs with diverse structures, encompassing various anchoring and functional groups, were systematically categorized their multifaceted roles in inverted PSCs TSCs correlation device performance investigated.

Language: Английский

---

Enhancing Efficiency of Industrially‐Compatible Monolithic Perovskite/Silicon Tandem Solar Cells with Dually‐Mixed Self‐Assembled Monolayers

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(46)

Published: June 22, 2024

Abstract The antisolvent‐assisted spin‐coating still lags behind the thermal evaporation method in fabricating perovskite films atop industrially textured silicon wafers making monolithic perovskite/silicon solar cells (P/S‐TSCs). inhomogeneity of hole‐selective self‐assembled monolayers (SAMs) often arises from insufficient bonding between hygroscopic phosphonic acid anchors and metal oxide. To address this, a mixed‐SAM strategy (Mx‐SAM) is proposed to enhance adsorption energy SAMs on ITO surface, facilitate formation dense humidity‐resistant layer (HSL) substrates, improve hole transport capabilities. With aid Mx‐SAM strategy, optimized wide‐bandgap PSCs achieved an impressive power conversion efficiency (PCE) 22.63% with exceptionally high fill factor ( FF ) 86.67% using 1.68 eV perovskite. Moreover, they exhibited enhanced stability under damp‐heat conditions (ISOS‐D‐3, 85% RH, 85 °C) T 90 900 h for encapsulated PSCs, representing one best performances PSCs. When further extending P/S‐TSCs industry, remarkable 28.07% reached while upholding outstanding reproducibility. This holds significant promise feasibility industrially‐compatible P/S‐TSCs.

Language: Английский

---

Self-assembled materials with an ordered hydrophilic bilayer for high performance inverted Perovskite solar cells

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

While self-assembled material based inverted perovskite solar cells have surpassed power conversion efficiencies of 26%, enhancing their performance in large-area configurations remains a significant challenge. In this work, we report hole-selective layer 4-(7H-dibenzo[c,g]carbazol-7-yl)phenyl)phosphonic acid, with π-expanded conjugation. The enhanced intermolecular π–π interactions facilitate the self-assembly acid molecules to form an ordered bilayer hydrophilic surface, which passivates buried interface defect and enables high-quality preparation, while simultaneously interfacial charge extraction transport. certified efficiency small-area (0.0715 cm2) device is 26.39% high stability. Furthermore, 25.21% achieved for 99.12 mm2 large area device. Qu et al. conjugation as hole selective cells. transport enable 7.15 - -devices, respectively.

Language: Английский

---

Minimizing Buried Interface Energy Losses with Post‐Assembled Chelating Molecular Bridges for High‐Performance and Stable Inverted Perovskite Solar Cells

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Self‐assembled monolayers (SAMs) as hole‐collecting materials have made remarkable progress in inverted perovskite solar cells (PSCs). However, the incomplete coverage of SAMs and non‐intimate interface contact between perovskite/SAMs usually cause inferior characteristics significant energy losses at heterojunction interface. Herein, a post‐assembled chelating molecular bridge strategy using 5‐(9H‐carbazol‐9‐yl)isophthalicacid (CB‐PA) is developed to modify buried It found that CB‐PA can be chemically coupled with MeO‐2PACz through π–π stacking carbazole groups, chelate by forming double C═O···Pb bonds, thus constructing bridge‐connected promote carrier extraction. Simultaneously, fill voids form dense hybrid SAMs, resulting uniform surface potential improved contact. Moreover, treatment also tends induce oriented crystallization films, passivate defects, release lattice stress Consequently, CB‐PA‐based PSCs achieve champion efficiency 25.27% superior operational stability, retaining ≈94% their initial after maximum power point (MPP) tracking (65 °C) for 1000 h ISOS‐L‐2I protocol. This work provides an innovative address challenges high‐performance PSCs.

Language: Английский

---