Oct 2026· Advanced Energy Materials· 0 citations· 47 references
Abstract
Fullerene and its derivatives are widely adopted as electron transport layers (ETLs) in high‐performance perovskite solar cells (PSCs). However, fullerene materials are prone to aggregation and rearrangement under environmental stress, which acts as one of the critical factors restricting the long‐term operational stability of devices. Here, we report a host–guest supramolecular assembly strategy using rigid triptycene (TPC) molecules to stabilize fullerene‐based ETLs. The [6,6]‐phenyl‐C
61
‐butyric acid methyl ester (PCBM)–TPC host–guest interaction enables the spatial isolation and noncovalent immobilization of PCBM cages, which suppresses the thermal‐driven aggregation, crystallization, and morphological variation of PCBM layers. The resulting inverted PSCs achieve a champion power conversion efficiency of 26.83%, with 96.0% efficiency retention after 1000 h of 85°C thermal aging and 92.3% retention after 1000 h of 85°C photothermal maximum power point tracking. This work offers a supramolecular solution for high‐stability optoelectronic devices.
Bisphosphonate-anchored self-assembled monolayers (SAMs) play a pivotal function in the development of high-performance inverted perovskite solar cells (PSCs). However, the strong aggregation tendency of SAM molecules on substrates significantly limits the power conversion efficiency (PCE) of the devices. In this study...
Fan Wu, Kai Chen, Yuan-Yuan Pan et al.· Angewandte Chemie· 0 citations
PCBM (phenyl-C61-butyric acid methyl ester) is one of the most used electron transport layers (ETLs) in perovskite solar cells (PSCs). However, PCBM tends to self-aggregate during the thermal aging process, disrupting film continuity and limiting device lifetime. To address this issue, we synthesized new fluorinated ph...
The performance of self-assembled monolayers (SAMs) in perovskite solar cells (PSCs) is frequently hindered by molecular aggregation, poor interfacial wettability, and high buried-interface defect density. Herein, we introduce 4-carboxyphenylboronic acid (CPBA) as a multifunctional molecular bridge to synergistically e...
The power conversion efficiency (PCE) and stability of flexible perovskite solar modules (PSMs) are less than those of their rigid devices because surface hydroxyls desorption on flexible substrates, which disrupts self-assembled monolayer (SAM) anchoring and perovskite crystallization. We developed a decoupled SAM-per...
In this work, we report an innovative interface engineering strategy combining bidirectional chemical anchoring and electronic bridging via a 2D reduced graphene oxide (rGO) and MXene conductive network. This hierarchical 2D structure suppresses the aggregation and stacking of single-layer MXene nanosheets while mutu...
Zi Wang, Yu-Xin Shi, Xue-An Liu et al.· ACS Energy Letters· 0 citations
The practical deployment of perovskite solar cells (PSCs) is critically hindered by their susceptibility to moisture, oxygen, and thermal degradation, particularly under high‐temperature and high‐humidity conditions. Herein, we design and synthesize a dicarbonyl‐functionalized thienoacene passivator featuring multi...
Ebubekir Camizci, İbrahim Deneme, Bo Xu et al.· Advanced Functional Material...· 0 citations
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