Recrystallizing Sputtered NiO_x for Improved Hole Extraction in Perovskite/Silicon Tandem Solar Cells

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract Sputtering nickel oxide (NiO x ) is a production‐line‐compatible route for depositing hole transport layers (HTL) in perovskite/silicon tandem solar cells. However, this technique often results films with low crystallinity and structural flaws, which can impair electronic conductivity. Additionally, the complex surface chemistry inadequate Ni 3+ /Ni 2+ ratio impede effective binding of self‐assembled monolayers (SAMs), affecting extraction at perovskite/HTL interface. Herein, these issues are addressed using recrystallization strategy by treating sputtered NiO thin sodium periodate (NaIO 4 ), an industrially available oxidant. This treatment improved increased ratio, resulting higher content oxyhydroxide. These enhancements strengthened SAM's anchoring capability on Moreover, NaIO facilitated Na + diffusion within perovskite layer minimized phase separation, thus improving device stability. As result, single‐junction cells 1.68 eV bandgap achieve power conversion efficiency (PCE) 23.22% area 0.12 cm 2 . Perovskite/silicon 1 reached PCE 30.48%. Encapsulated devices retained 95% their initial after 300 h maximum point tracking under 1‐sun illumination 25 °C.

Language: Английский

---

Improving efficiency and stability of wide-bandgap perovskite solar cells and four-terminal tandems with iso-propylammonium 2D passivator

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159453 - 159453

Published: Jan. 1, 2025

Language: Английский

---

Customized Multifunctional Additive Regulates 1.67 eV‐Wide‐Bandgap Perovskite Crystallization for Four‐Terminal Perovskite/Silicon Tandem Solar Cells

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

Published: April 8, 2025

Abstract Wide‐bandgap (WBG) perovskite solar cells (PSCs, E g > 1.6 eV), serving as the top cell in perovskite/silicon tandem (PSTSCs), play an indispensable role absorbing high energy photons and increasing overall efficiency. However, WBG PSCs often suffer from severe light‐induced phase segregation significant non‐radiative recombination losses due to uncontrolled rapid crystallization. Here, polyfluoride molecular additives are designed incorporated via (diacetoxyiodo)benzene into perovskite, regulate crystallization process of films thereby reduce defects. (Bis(trifluoroacetoxy)iodo)benzene (BTFIB) can passivate uncoordinated lead ions iodide vacancies, inhibiting separation caused by migration reducing loss during charge transport. Moreover, introduction BTFIB effectively moderate film formation confer excellent hydrophobic properties films. Consequently, BTFIB‐based 1.67 eV‐WBG devices yield a champion efficiency 23.05% (certified 22.21%), enabling 31.20% four‐terminal PSTSCs, along with open‐circuit voltage 1.246 V fill factor 85.34%. After 2500 h aging glovebox, device retained 80% its initial

Language: Английский

---

Union of Perovskite and Silicon: Overcoming Electrical Losses for Surpassing Shockley–Queisser Limit

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

Published: May 6, 2025

Abstract Perovskite/silicon tandem solar cells (TSCs) have emerged as a highly promising technology for achieving exceptional power conversion efficiencies by leveraging the complementary light absorption properties of perovskite and silicon materials. However, electrical losses—originating from suboptimal film quality, pronounced nonradiative recombination at contact interfaces, charge transport inefficiencies in interconnecting layers (ICLs)—remain significant obstacles to reaching theoretical efficiency limits. This review systematically investigates primary sources losses perovskite/silicon TSCs offers comprehensive analysis recent advancements mitigating these losses, including enhancements reductions interfacial recombination, optimizations ICL performance. Special focus is placed on strategies aimed minimizing perovskite/perovskite/silicon triple‐junction TSCs. The concludes outlining future research directions, emphasizing critical role ongoing innovation material design, engineering, device architecture fully unlock potential

Language: Английский

---

Impact of structural advancements interface engineering operational stability and commercial viability of perovskite/silicon tandem solar cells

Solar Energy, Journal Year: 2024, Volume and Issue: 286, P. 113190 - 113190

Published: Dec. 20, 2024

Language: Английский

---