[1] Kearns D,Calvin M. Photovoltaic effect and photoconductivity in laminated organic systems[J]. The Journal of Chemical Physics ,1958,29:950. [2] Tang C W. Two-layer organic photovoltaic cell[J]. Applied Physics Letters ,1986,48:183. [3] Sariciftci N S,Smilowitz L,Heeger A J, et al. Photoinduced electron transfer from a conducting polymer to buckminsterfullerene[J]. Science ,1992,258:1474-1476. [4] Yu G,Gao J,Hummelen J, et al. Polymer photovoltaic cells:Enhanced efficiencies via a network of internal donor-acceptor heterojunctions[J]. Science-AAAS-Weekly Paper Edition ,1995,270:1789-1790. [5] Shaheen S E,Brabec C J,Sariciftci N S, et al. 2.5% efficient organic plastic solar cells[J]. Applied Physics Letters ,2001,78:841-843. [6] Padinger F,Rittberger R S ,Sariciftci N S. Effects of post production treatment on plastic solar cells[J]. Advanced Functional Materials ,2003,13:85-88. [7] Kim J Y,Kim S H,Lee H H, et al. New architecture for high-efficiency polymer photovoltaic cells using solution-based titanium oxide as an optical spacer[J]. Advanced Materials ,2006,18:572-576. [8] Chen H Y,Hou J,Zhang S, et al. Polymer solar cells with enhanced open-circuit voltage and efficiency[J]. Nature Photonics ,2009,3:649-653. [9] He Z,Zhong C,Su S, et al. Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure[J]. Nat. Photon .,2012,6:591-595. [10] Hiramoto M,Suezaki M,Yokoyama M. Effect of thin gold interstitial-layer on the photovoltaic properties of tandem organic solar cell[J]. Chemistry Letters ,1990,19(3):327-330. [11] Yakimov A,Forrest S. High photovoltage multiple-heterojunction organic solar cells incorporating interfacial metallic nanoclusters[J]. Applied Physics Letters ,2002,80:1667-1669. [12] Drechsel J,Männig B,Kozlowski F, et al. Efficient organic solar cells based on a double pin architecture using doped wide-gap transport layers[J]. Applied Physics Letters ,2005,86:244102. [13] Dennler G,Prall H J,Koeppe R, et al. Enhanced spectral coverage in tandem organic solar cells[J]. Applied Physics Letters ,2006,89:73502-73503. [14] Gilot J,Wienk M M,Janssen R A J. Double and triple junction polymer solar cells processed from solution[J]. Applied Physics Letters ,2007,90:143512. [15] Kim J Y,Lee K,Coates N E, et al. Efficient tandem polymer solar cells fabricated by all-solution processing[J]. Science ,2007,317:222-225. [16] Dou L,You J,Yang J, et al. Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer[J]. Nature Photonics ,2012,6:180-185. [17] Zhou Y,Fuentes-Hernandez C,Shim J, et al. A universal method to produce low-work function electrodes for organic electronics[J]. Science ,2012,336:327-332. [18] Shim J W,Zhou Y,Fuentes-Hernandez C, et al. Studies of the optimization of recombination layers for inverted tandem polymer solar cells[J]. Solar Energy Materials and Solar Cells ,2012,107:51-55. [19] Shim J W,Fuentes-Hernandez C,Zhou Y, et al. Inverted tandem polymer solar cells with polyethylenimine-modified MoO x /Al 2 O 3 :ZnO nanolaminate as the charge recombination layers[J]. Advanced Energy Materials ,2014,doi:10.1002/aenm.201400048. [20] Zhou Y,Fuentes-Hernandez C,Shim J W, et al. High performance polymeric charge recombination layer for organic tandem solar cells[J]. Energy & Environmental Science ,2012,5:9827. [21] Kim J H,Song C E,Kim H U, et al. High open circuit voltage solution-processed tandem organic photovoltaic cells employing a bottom cell using a new medium band gap semiconducting polymer[J]. Chemistry of Materials ,2013,25:2722-2732. [22] Bin Mohd Yusoff A R,Lee S J,Kim H P, et al. 8.91% power conversion efficiency for polymer tandem solar cells[J]. Advanced Functional Materials ,2014,24(15):2240-2247. [23] Chen C C,Dou L,Gao J, et al. High-performance semi-transparent polymer solar cells possessing tandem structures[J]. Energy & Environmental Science ,2013,6:2714. [24] You J,Dou L,Yoshimura K, et al. A polymer tandem solar cell with 10.6% power conversion efficiency[J]. Nature Communications ,2013,4:1446. [25] Esiner S,Van Eersel H,Wienk M M,Janssen J R . Triple junction polymer solar cells for photoelectrochemical water splitting[J]. Advanced Materials ,2013,25(21):2932-2936. [26] Li W,Furlan A,Janssen J R, et al. Efficient tandem and triple-junction polymer solar cells[J]. Journal of the American Chemical Society ,2013,135:5529-5532. [27] Chen C C,Chang W H,Yoshimura K, et al. An efficient triple-junction polymer solar cell having a power conversion efficiency exceeding 11%[J]. Advanced Materials ,2014,26:5670-5677. |