[1] NAVAS E, FERNáNDEZ R, SEPúLVEDA D, et al. Soft grippers for automatic crop harvesting: a review[J]. Sensors, 2021, 21(8): 2689.
[2] MATIOLI E, WEISBUCH C. Impact of photonic crystals on LED light extraction efficiency: approaches and limits to vertical structure designs[J]. Journal of Physics D: Applied Physics, 2010, 43(35): 354005.
[3] KIM K K, LEE S, KIM H, et al. Enhanced light extraction efficiency of GaN-based light-emitting diodes with ZnO nanorod arrays grown using aqueous solution[J]. Applied Physics Letters, 2009, 94(7): 071118.
[4] SEO J, KIM S, KIM Y, et al. Effect of glass refractive index on light extraction efficiency of light‐emitting diodes[J]. Journal of the American Ceramic Society, 2014, 97(9): 2789-2793.
[5] HUANG C H, KANG C Y, CHANG S H, et al. Ultra-high light extraction efficiency and ultra-thin mini-LED solution by freeform surface chip scale package array[J]. Crystals, 2019, 9(4): 202.
[6] JIANG B H, LIN D W, SHIU M N, et al. Efficient, ambient‐ stable, all‐polymer organic photodetector for machine learning‐promoted intelligent monitoring of indoor plant growth[J]. Advanced Optical Materials, 2023: 2203129.
[7] BERKOVICH Y A, BURYAK A A, OCHKOV O A, et al. Minimization of the equivalent system mass of a vitamin greenhouse with LED lighting for various scenarios of space missions[J]. Acta Astronautica, 2022, 198: 403-409.
[8] ZAVAFER A, MANCILLA C, JOLLEY G, et al. On the concepts and correct use of radiometric quantities for assessing the light environment and their application to plant research[J]. Biophysical Reviews, 2023, 15: 385-400.
[9] KUDIRKA G, VIRSILE A, LAUZIKE K, et al. Photosynthetic photon flux density effects on portulaca olearacea in controlled-environment agriculture[J]. Plants, 2023, 12(20): 3622.
[10] SAITO K, ISHIGAMI Y, GOTO E. Evaluation of the light environment of a plant factory with artificial light by using an optical simulation[J]. Agronomy, 2020, 10(11): 1663.
[11] CHEREMISIN A V, GUREEVA I M, BRIUSHININ A A, et al. Development of an ecological lighting device to reduce the growth time of agricultural plants in greenhouses[C]//Journal of Physics: Conference Series. IOP Publishing, 2021, 1942(1): 012094.
[12] ZAZUETA-TORRES N D, YANEZ-JUAREZ M G, AYALATAFOYA F, et al. Quality of light from fluorescent lamps in cucumber growth and severity of Oidium sp[J]. Revista Mexicana de Ciencias Agrícolas, 2022, 13(6): 977-989.
[13] KE X, YOSHIDA H, HIKOSAKA S, et al. Photosynthetic photon flux density affects fruit biomass radiation-use efficiency of dwarf tomatoes under LED light at the reproductive growth stage[J]. Frontiers in Plant Science, 2023, 14: 1076423.
[14] SUNGWISET S, JANPRUNG T, PECHSIRI T, et al. Study of LED grow light driver circuit for indoor strawberry cultures: a class experiment[J]. ASEAN Journal of Science and Engineering Education, 2021, 1(1): 21-30.
[15] AFZALI S, MOSHARAFIAN S, VAN IERSEL M W, et al. Optimal lighting control in greenhouses equipped with high-intensity discharge lamps using reinforcement learning[C]//2021 American Control Conference (ACC). IEEE, 2021: 1414-1419.
[16] MA Y, XU A, CHENG Z M M. Effects of light emitting diode lights on plant growth, development and traits a meta-analysis[J]. Horticultural Plant Journal, 2021, 7(6): 552-564.
[17] MATSUDA R, SHIBA S, CHEN Y, et al. Growth of cucumber seedlings under emulated sunlight with artificially reproduced fluctuations in photosynthetic photon flux density[J]. Journal of Agricultural Meteorology, 2023, 79(4): 131-137.
[18] KUDIRKA G, VIRSILE A, LAUZIKE K, et al. Photosynthetic photon flux density effects on portulaca olearacea in controlledenvironment agriculture[J]. Plants, 2023, 12(20): 3622.
[19] HASHIM M, AHMAD B, DROUET S, et al. Comparative effects of different light sources on the production of key secondary metabolites in plants in vitro cultures[J]. Plants, 2021, 10(8): 1521.
[20] PALMITESSA O D, PRINZENBERG A E, KAISER E, et al. LED and HPS supplementary light differentially affect gas exchange in tomato leaves[J]. Plants, 2021, 10(4): 810.
[21] OLVERA-GONZALEZ E, ESCALANTE-GARCIA N, MYERS D, et al. Pulsed LED-lighting as an alternative energy savings technique for vertical farms and plant factories[J]. Energies, 2021, 14(6): 1603.
[22] MILIAUSKIENE J, KARLICEK JR R F, KOLMOS E. Effect of multispectral pulsed light-emitting diodes on the growth, photosynthetic and antioxidant response of baby leaf lettuce (Lactuca sativa L.)[J]. Plants, 2021, 10(4): 762.
[23] CAROTTI L, POTENTE G, PENNISI G, et al. Pulsed LED light: exploring the balance between energy use and nutraceutical properties in indoor-grown lettuce[J]. Agronomy, 2021, 11(6): 1106.
[24] YU H B, XU X D, MA L Y, et al. The effect mechanism and model optimization of pulsed light dark duration on lettuce[J]. Research Square, 2021, 1: 1-30.
[25] SHIMADA A, TANIGUCHI Y. Red and blue pulse timing control for pulse width modulation light dimming of light emitting diodes for plant cultivation[J]. Journal of Photochemistry and Photobiology B: Biology, 2011, 104(3): 399-404.