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Muhammad Abdul Basit,Muhammad Aanish Ali,Zunair Masroor,Zeeshan Tariq,방진호 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
Quantum dot-sensitized solar cells (QDSSCs) have become important in dealing with the energyeconomy-environment dilemma of today’s world. QDSSCs offer a unique set of characteristics includingmultiple exciton generation and higher extinction coefficients associated with quantum dots (QDs),avowing its potential for high photoconversion efficiency (PCE), which is evident from its augmentedincrease of the PCE to 15 % within the past decade. To make full use of the photoelectrochemical competenceof QDSSCs, researchers have strategically dealt with various detrimental events taking placewithin QDs and on interfacial positions in photoanodes. Back transfer of photogenerated electrons, electron/hole recombination via surface defects, and photocorrosion of QDs seriously deteriorate the performanceof QDSSCs and are thus considered a bottleneck for their further improvements. Deposition ofinterfacial layers (ILs) has proven beneficial in this regard and hence, it requires a comprehensive overview. Based on their positions inside the photoanode of QDSSCs, ILs offer single or multiple roles inimproving the PCE: improvement of surface passivation (passivation ILs), deposition of QDs (seedingILs), and/or control of the back transfer of electrons to the electrolyte (blocking ILs). This review coversthe multifunctional diversity of ILs inside QDSSCs, apposite characterization techniques for ILs, and prospectsregarding their role.