1. Introduction
Dye-sensitized solar cell (DSSC) has emerged as one of the representative photovoltaic technology for next generation, of which working mechanism resemble the principle of photosynthesis process in nature.1-7 In DSSC, the most popular component of counter electrode (CE) is platinum (Pt) based thin film on F-doped SnO (FTO) conducting glass because of its high electrochemical activity.8,9 However, in addition to the high cost of Pt that prevent the materials from large scale applications, I3-/I- electrolyte is corrosive towards Pt during its long-term operation, which hamper the commercial success of DSSCs.1,10 In order to replace Pt with more chemically stable materials, CEs based on carbon materials have been investigated, producing low-cost solar cells with reasonable performances.11-24 Among carbon materials, graphene or graphene oxide (GO) is a prospective alternative to the Pt CE for DSSC due to its high electron mobility and low cost as demonstrated in previous literatures.25-35 However, solar energy conversion efficiencies of such examples are often limited probably
1. IntroductionDye-sensitized solar cell (DSSC) has emerged as one of the representative photovoltaic technology for next generation, of which working mechanism resemble the principle of photosynthesis process in nature.1-7 In DSSC, the most popular component of counter electrode (CE) is platinum (Pt) based thin film on F-doped SnO (FTO) conducting glass because of its high electrochemical activity.8,9 However, in addition to the high cost of Pt that prevent the materials from large scale applications, I3-/I- electrolyte is corrosive towards Pt during its long-term operation, which hamper the commercial success of DSSCs.1,10 In order to replace Pt with more chemically stable materials, CEs based on carbon materials have been investigated, producing low-cost solar cells with reasonable performances.11-24 Among carbon materials, graphene or graphene oxide (GO) is a prospective alternative to the Pt CE for DSSC due to its high electron mobility and low cost as demonstrated in previous literatures.25-35 However, solar energy conversion efficiencies of such examples are often limited probably
การแปล กรุณารอสักครู่..