• 主页
  • 查找结果
  • Integration of CdSe/CdSexTe1-x Type-II Heterojunction Nanorods into Hierarchically Porous TiO2 Electrode for Efficient Solar Energy Conversion.

Integration of CdSe/CdSexTe1-x Type-II Heterojunction Nanorods into Hierarchically Porous TiO2 Electrode for Efficient Solar Energy Conversion.

Scientific reports (2015-12-08)
Sangheon Lee, Joseph C Flanagan, Joonhyeon Kang, Jinhyun Kim, Moonsub Shim, Byungwoo Park
摘要

Semiconductor sensitized solar cells, a promising candidate for next-generation photovoltaics, have seen notable progress using 0-D quantum dots as light harvesting materials. Integration of higher-dimensional nanostructures and their multi-composition variants into sensitized solar cells is, however, still not fully investigated despite their unique features potentially beneficial for improving performance. Herein, CdSe/CdSe(x)Te(1-x) type-II heterojunction nanorods are utilized as novel light harvesters for sensitized solar cells for the first time. The CdSe/CdSe(x)Te(1-x) heterojunction-nanorod sensitized solar cell exhibits ~33% improvement in the power conversion efficiency compared to its single-component counterpart, resulting from superior optoelectronic properties of the type-II heterostructure and 1-octanethiol ligands aiding facile electron extraction at the heterojunction nanorod-TiO(2) interface. Additional ~32% enhancement in power conversion efficiency is achieved by introducing percolation channels of large pores in the mesoporous TiO(2) electrode, which allow 1-D sensitizers to infiltrate the entire depth of electrode. These strategies combined together lead to 3.02% power conversion efficiency, which is one of the highest values among sensitized solar cells utilizing 1-D nanostructures as sensitizer materials.

材料
货号
品牌
产品描述

Sigma-Aldrich
甲醇, anhydrous, 99.8%
Sigma-Aldrich
甲醇, HPLC Plus, ≥99.9%, poly-coated bottles
Sigma-Aldrich
甲苯, anhydrous, 99.8%
Sigma-Aldrich
甲醇, suitable for HPLC, gradient grade, 99.93%
Sigma-Aldrich
氯仿, contains 100-200 ppm amylenes as stabilizer, ≥99.5%
Sigma-Aldrich
甲醇, ACS reagent, ≥99.8%
Sigma-Aldrich
甲苯, ACS reagent, ≥99.5%
Sigma-Aldrich
氯仿, anhydrous, ≥99%, contains 0.5-1.0% ethanol as stabilizer
Sigma-Aldrich
硫化钠 九水合物, ACS reagent, ≥98.0%
Sigma-Aldrich
氯仿, anhydrous, contains amylenes as stabilizer, ≥99%
Sigma-Aldrich
甲醇, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8% (GC)
Sigma-Aldrich
3-巯基丙酸, ≥99%
Sigma-Aldrich
硫化钠 九水合物, ≥99.99% trace metals basis
Sigma-Aldrich
氯仿, contains ethanol as stabilizer, ACS reagent, ≥99.8%
Sigma-Aldrich
三正辛基膦, 97%
Sigma-Aldrich
甲醇, Laboratory Reagent, ≥99.6%
Sigma-Aldrich
氯仿, puriss. p.a., reag. ISO, reag. Ph. Eur., 99.0-99.4% (GC)
Sigma-Aldrich
三辛基氧化膦, ReagentPlus®, 99%
Sigma-Aldrich
三正辛基膦, technical grade, 90%
Sigma-Aldrich
甲苯, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.7% (GC)
Sigma-Aldrich
甲醇, BioReagent, ≥99.93%
Sigma-Aldrich
甲醇, ACS spectrophotometric grade, ≥99.9%
Sigma-Aldrich
氯仿, contains amylenes as stabilizer, ACS reagent, ≥99.8%
Sigma-Aldrich
1-辛硫醇, ≥98.5%
Sigma-Aldrich
硫化钠 九水合物, ≥98.0%
Sigma-Aldrich
氯仿, contains ethanol as stabilizer, meets analytical specification of BP, 99-99.4% (GC)
Sigma-Aldrich
甲醇, ACS reagent, ≥99.8%
Sigma-Aldrich
甲醇, Absolute - Acetone free
Sigma-Aldrich
甲醇, puriss., meets analytical specification of Ph Eur, ≥99.7% (GC)
Sigma-Aldrich
十八烷基膦酸, 97%