The lack of efficient electron transport layers
Research gap analysis derived from 3 physics papers in our local library.
The gap
The lack of efficient electron transport layers for perovskite solar cells. The need for a suitable sulfur precursor for the synthesis of high-quality CdS thin films. The lack of understanding of the energy band alignment between CdS and MA
Evidence profile
Sourced from the abstract and stated research gap of the source papers, classified as general, drawn from work published between 2024 and 2026, spanning 2 journals. Those papers have been cited 54 times in total.
Research trend
Established — well-defined area with open sub-problems.
Supporting evidence — 3 representative gaps
- Boosting Efficiency and Stability of NiOx‐Based Inverted Perovskite Solar Cells Through D–A Type Semiconductor Interface Modulation (2024) · Advanced Functional Materials · cited 54× · doi
Abstract NiOx is one of the promising inorganic hole transporting materials in inverted perovskite solar cells (PSCs), however, its device efficiency and stability are still limited by the energy level mismatch, low intrinsic conductivity, high interface defect density, and complex active species.
generalabstractKeywords: abstract niox promising inorganic hole transporting materials inverted perovskite solar cells pscs device efficiency stability - Thiourea-based CdS thin films: structural and optical analysis for photovoltaic applications (2026) · Applied Chemical Engineering · doi
The lack of efficient electron transport layers for perovskite solar cells. The need for a suitable sulfur precursor for the synthesis of high-quality CdS thin films. The lack of understanding of the energy band alignment between CdS and MAPbI3 perovskite.
generalstated research gapevidence 5/5Keywords: lack efficient electron transport layers perovskite solar cells - Universal Metal Electrode Contacts in Perovskite Solar Cells via Fermi‐Level Pinning at Yb‐Doped n + Fullerene Interfaces (2026) · Advanced Functional Materials · doi
ABSTRACT Efficient electron extraction at the electron transport layer (ETL)/metal interface is critical for high‐performance perovskite solar cells (PSCs), which is fundamentally governed by interfacial energy‐level alignment; however, the microscopic mechanism by which low‐resistance contacts are established at fullerene/metal interfaces remains poorly understood.
generalabstractevidence 5/5Keywords: electron metal abstract efficient extraction transport layer interface critical high performance perovskite solar cells pscs
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