An all-solid-state fiber-type solar cell achieving 9.49% efficiency

Abstract

A fiber-type perovskite solar cell is fabricated by wrapping a conducting carbon nanotube sheet onto a perovskite crystal-deposited strip electrode.

Flexible and Stretchable Perovskite Solar Cells: Device Design and Development Methods

“…The corresponding coaxial PSC fiber with CNT sheets as photoanode achieved an improved PCE of 7.1%. Transferring the coaxial fiber shape into a flat 1D ribbon‐like shape with a structure of PEN/ITO/TiO 2 /MAPbI 3 /CNT, the device achieved a high PCE of 9.49%, which benefited from better crystallization of the perovskite on the flat interface . Up to now, although the performances of these fibrous PSCs are far away from conventional FPSCs, they have established the good weavable ability and shed light on the way to apply FPSCs in wearable electronics.…”

The Rise of Fiber Electronics

“…[61] Conventional potting process,w hich consists of immersing the electronic parts in liquid resin in ac onfined mold and curing, presents new challenges for one-dimensional cylindrical structures in terms of consistent quality and scalability. In particular, encapsulating fiber devices remains challenging in terms of both materials and technology.W hent raditional encapsulation materials and technologies are used, the stability of the fiber device is lower than that of its planar counterparts.…”

“…Af urther improvement in the available active electrochemical surface through hydrophilic modification of the counter electrode produced the highest PCE of 10 %t o date. [61] Thelarge perovskite crystals formed were the key to the high performance and may be optimized for even higher PCEs in the future. [57] In the above cases,l iquid electrolytes are typically required;h owever, effective encapsulation to prevent the leakage of liquid electrolytes remains achallenge and may be as afety concern for wearable applications.G el or solid electrolytes were proposed but have much lower PCEs than liquid electrolytes, [58] so many efforts were made to fabricate all-solid-state polymer solar cells in the fiber shape.D espite the growing interest in increasing PCEs of planar polymer solar cells, [40,59] the maximum PCE of the fiber-shaped polymer solar cell remains relatively low (3.27 %), [40] possibly because it is difficult to produce the desired thin and continuous photoactive layer (typically 100-400 nm) [60] of semiconducting polymers on acurved fiber surface.W ith the rapid advancement in perovskite solar cells,p romising examples of the realization of highly efficient all-solid-state fiber-shaped photovoltaic devices with aPCE of 9.49 %have appeared in just the past several years.…”

A One‐Dimensional Fluidic Nanogenerator with a High Power Conversion Efficiency

“…For solar cells,o nly one side can be illuminated to harvest sunlight during use.A dditionally,t he availability of sunlight is only during daytime. To systematically estimate the harvesting performance of the FFNG,acomparison with various miniature fiber-shaped generators,i ncluding dyesensitized solar cells (DSSCs), [19,[29][30][31][32][33] perovskite solar cells (PSCs), [20,21,[34][35][36] quantum-dot-sensitized solar cells (QDSSCs), [37][38][39] organic solar cells (OSCs), [40,41] inorganic solar cells (ISCs) [42,43] and nanogenerators (NGs) that harvest electrostatic and triboelectric energy, [23,24] was further conducted (Figure 3). To systematically estimate the harvesting performance of the FFNG,acomparison with various miniature fiber-shaped generators,i ncluding dyesensitized solar cells (DSSCs), [19,[29][30][31][32][33] perovskite solar cells (PSCs), [20,21,[34][35][36] quantum-dot-sensitized solar cells (QDSSCs), [37][38][39] organic solar cells (OSCs), [40,41] inorganic solar cells (ISCs) [42,43] and nanogenerators (NGs) that harvest electrostatic and triboelectric energy, [23,24] was further conducted ...…”

“…[14] Thestreaming potential by pressuredriving water flow is hard to be induced on hydrophobic surface. [19,[25][26][27][28][29] perovskites olar cells (PSCs), [20,21,[30][31][32] quantum-dotsensitized solar cells (QDSSCs), [33][34][35] organic solar cells (OSCs), [36,37] inorganic solar cells (ISCs) [38,39] and nanogenerators (NGs) that harvest electrostatic and triboelectrice nergy. Fort he OMC-incorporated FFNG, owing to the large surface area, the OMC provides ah igher capacity for ion adsorption, which allows for the generation of alarger potential difference.T overify this hypothesis,w ei nvestigated the cyclic voltammograms of the FFNG with increasing OMC contents in at hree-electrode electrochemical cell.…”