Advanced Functional Materials, volume 33, issue 38

Quantum Junction Solar Cells: Development and Prospects

Sikandar Aftab 1
Muhammad Zahir Iqbal 2
Sajjad Hussain 3
Fahmid Kabir 4
Abdullah A Al Kahtani 5
Hosameldin Helmy Hegazy 6, 7
Publication typeJournal Article
Publication date2023-06-25
scimago Q1
SJR5.496
CiteScore29.5
Impact factor18.5
ISSN1616301X, 16163028
Electronic, Optical and Magnetic Materials
Electrochemistry
Condensed Matter Physics
Biomaterials
Abstract

Nanocrystals, called semiconductor quantum dots (QDs), contain excitons that are three‐dimensionally bound. QDs exhibit a discontinuous electronic energy level structure that is similar to that of atoms and exhibit a distinct quantum confinement effect. As a result, QDs have unique electrical, optical, and physical characteristics that can be used in a variety of optoelectronic device applications, including solar cells. In this review article, the stable and controllable synthesis of QD materials is outlined for upscaling solar cells, including material development and device performance enhancement. It includes a systematic variety of device structures for the fabrication of solar cells, such as QD, hybrid QD/organic, hybrid QD/inorganic, perovskite QD, and hybrid 2D MXene QD/perovskite. The mechanisms for the improvement of stability by QD treatment are examined. For example, the 2D MXene QD and/or Cu1.8S nanocrystal doping significantly increases the long‐term light and ambient stability of perovskite solar cells, resulting from improved perovskite crystallization, reduced hole transport layer (HTL) aggregation and crystallization of films, and reduced UV‐induced photocatalytic activity of the electron transport layer (ETL). For the advancement of QD solar cells and their interaction with various materials, the conclusions from this review are crucial. Finally, future prospects for the development of QD solar cells as well as current challenges are discussed.

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