Over 18.8% Efficiency of Layer‐By‐Layer Organic Photovoltaics Enabled by Ameliorating Exciton Utilization in Acceptor Layer

Advanced Functional Materials, Год журнала: 2024, Номер 34(16)

Опубликована: Янв. 2, 2024

Abstract The layer‐by‐layer (LbL) organic photovoltaics (OPVs) are constructed with wide‐bandgap donor PM1 and narrow‐bandgap acceptor L8‐BO. exciton utilization near cathode is still challenging considering restricted diffusion distance of excitons inability for transferring energy from L8‐BO to PM1. Herein, incorporation into layer (DIA) strategy employed improve cathode. efficiency LbL OPVs can be improved 18.02% 18.81% by incorporating 10 wt% layer, which closely associated efficient separation originated more adequate donor/acceptor interface faster charge transfer, as evidenced magneto‐photocurrent transient absorption results. in situ test morphological characterization clarify that molecular packing property benefited prolonged aggregation nucleation time assisted DIA strategy, contributing transport inhibited recombination active layers. thickness insensitive also induced indicated PCE retention value (82.2% vs. 74.0%) PM1/L8‐BO:PM1 PM1/L8‐BO when increased ≈180 nm. This work demonstrates the effectiveness improving tolerance OPVs.

Язык: Английский

---

Over 19.2% efficiency of layer-by-layer organic photovoltaics enabled by a highly crystalline material as an energy donor and nucleating agent

Energy & Environmental Science, Год журнала: 2024, Номер 17(14), С. 5173 - 5182

Опубликована: Янв. 1, 2024

By introducing highly crystalline material D18A into donor layer acting as energy and nucleating agent, an optimal PCE of 19.25% was achieved for PM1 : D18A/L8-BO based OPVs.

Язык: Английский

---

Over 19.2% Efficiency of Layer‐By‐Layer Organic Photovoltaics by Ameliorating Exciton Dissociation and Charge Transport

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract Layer‐by‐layer (LbL) organic photovoltaics (OPVs) are fabricated with polymer PM1 as donor and small molecule L8‐BO acceptor by employing sequential spin‐coating technology. The BTP‐eC9 PTAA deliberately selected for individually incorporating into layer layer, resulting in the power conversion efficiency (PCE) increased from 18.22% to 19.23%. improvement of performance is attributed synergistically short circuit current density ( J SC ) 27.78 mA cm −2 fill factor (FF) 78.23%. introduction can promote photogenerated exciton dissociation, especially excitons near anode. Meanwhile, molecular crystallinity also enhanced appropriate layer. incorporation provide hole transport channels effectively improve holes generated self‐dissociation L8‐BO, FFs 77.40% synergistic effects layers result a 19.23% PCE optimized LbL‐OPVs. This work demonstrates that there great room hierarchically optimize achieving highly efficient

Язык: Английский

---

Iron complex/graphene oxide hybrid modification of ZnO surface for achieving stable inverted organic photovoltaics

Applied Surface Science, Год журнала: 2023, Номер 648, С. 159051 - 159051

Опубликована: Ноя. 29, 2023

Язык: Английский

---

Exploiting Two Nonfullerene Acceptors for Enhanced Light Absorption and Reduced Charge Recombination in High-Efficiency Polymer Solar Cells

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(14), С. 8348 - 8354

Опубликована: Июль 11, 2024

Язык: Английский

---