Investigation of the electron transport layer in semitransparent organic photovoltaic cells using near-infrared light-absorbing materials

被引：1

作者：

Kuwano, Kohei ^{[1
,2
]}

Okajima, Taiki ^{[1
,2
]}

Watanabe, Yasuyuki ^{[3
]}

Chikamatsu, Masayuki ^{[2
]}

Yoshida, Yuji ^{[2
]}

Nishikawa, Eiichi ^{[1
]}

机构：

[1] Tokyo Univ Sci, 6-3-1 Niijuku, Tokyo 1258585, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba Cent 5-1,1-1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan

[3] Suwa Univ Sci, 5000-1 Toyohira, Chino Nagano 3910213, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2021年 / 60卷 / 07期

关键词：

Organic photovoltaic; Semitransparent; Electron transport layer; Nonfullerene; Light utilization efficiency; SOLAR-CELLS; EFFICIENT; SNO2; RECOMBINATION; EXTRACTION; MORPHOLOGY; BULK;

D O I：

10.35848/1347-4065/abf94a

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

One challenge to realizing semitransparent organic photovoltaic (ST-OPV) cells is achieving both a high transmittance and high power conversion efficiency (PCE) simultaneously. We investigated the effect of using near-infrared light-absorbing materials in the different electron transport layer materials. Two materials were considered: zinc oxide (ZnO), which is used in conventional OPV cells, and tin oxide (SnO2), which has gained recent interest for its deposition at low temperatures suitable for flexible substrates. Experimental results showed that the ZnO- and SnO2-based ST-OPV cells had PCEs of 5.60% and 6.71%, respectively. The thickness of the organic active layer was varied to increase the transmittance in the visible light range. The SnO2-based ST-OPV cells were optimized to a thickness of 90 nm, which resulted in a PCE of 5.91%, average visible transmittance of 22.37%, and light utilization efficiency of 1.32%.

引用

页数：6

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